What are viruses: species, classification, characteristics, viral diseases, treatment and consequences. Deadly nine: Mixing terrible infections in the world (11 photos)

For a whole life, a person is able to overcome the number of different diseases and viruses, which can not be remembered to old age. Some diseases leak quickly and unnoticed, but others can sneak. And on the question of what virus is the most dangerous, you can call several dozen.

What is a virus?

Translated from the Latin "Virus" means "poison". It is a cell-free organism that multiplies and lives only in cells of living beings. Any virus consists of a protein shell in which DNA and RNA molecules are enclosed.

Scientists are known more than hundreds of viruses that differ in shape and habitat. They are mutated without any problems and adapt to the peculiarities of the organisms in which they were introduced. For viruses, life outside the cell does not exist. Microorganisms can cause many different diseases: measles, windmill, hepatitis, herpes, rabies, cancer, AIDS.

How do viruses apply?

All viruses that exist in nature can be divided into anthroposis (live in the human body) and zooanthropotic (live in animal body). You can pick one or another virus in several ways.

1. Eating (contaminated food, water).
2. Through blood (surgical intervention, transfusion, from the mother to the fruit, sexually, through the bites of infected insects or animals).
3. Airborne droplet (through the respiratory tract).
4. Contact-domestic (through hygiene items).

Almost all viruses have their own location locations. So, hepatitis B and C falls into the liver; Windmill propagates on the skin; The staphylococcus virus can "taste" to hit the intestines, throat, heart and other vital organs. All viral infections are accompanied by separate symptoms, can affect the organism differently. Each has its own specificity therapy.

The most dangerous viruses in the world

Our life is very unpredictable. Successful, healthy and strong person can already become practically disabled tomorrow, it is enough to be infected with the most terrible and incurable disease - AIDS. Many people themselves only call horror and trembling.

So, 10 most dangerous viruses:

1. Human immunodeficiency syndrome. It was opened in the early 80s of the twentieth century. The immunodeficiency virus affects the human immune system, completely depriving its protective functions. So, people can die from a simple runny nose or scratches on hand. Disease is incurable.
2. In second place in the nomination "The most dangerous viruses" costs a relatively new disease - spongy encephalopathy, as a result of which the human brain is affected and the dementia comes. The disease is incurable. Death comes within two years.
3. Rabies. Female outcome can occur after five days after infection. The rabies virus underlies hundreds of films about zombies.
4. African fever. Tropical infection, which is accompanied by high temperature, pain in muscles and hemorrhage. Some species of this fever are incurable and end with death.
5. Plague - infection, which in the XIV century mowed all who neither in the fall. The third part of Europe has died out of this disease. Nowadays, the plague therapy is Havkane vaccine, open at the beginning of the last century.
6. Anthrax. It is found in both people and animals. Disputes of infections can be maintained in the soil for many years, they are very lively, they even withstand boiling. Without treatment in 90%, the disease ends with a fatal outcome.
7. Cholera. The disease whose mortality is 85%. Transmitted by domestic way. It causes vomiting, dehydration, diarrhea and cramps. Nowadays, they actively use a vaccine against this ailment.
8. Meningococcal infection. Amazes the upper respiratory tract, the nasopherler. Inflammation ends with hemorrhages. The infection is capable of penetrating the brain. It may end to death.
9. Tulara'yia. Fever looks like abdominal typhus.
10. Malaria, African Tripanosomoz, tuberculosis, pneumonia and some others.

This list is not all the most dangerous viruses in the world. This is only a small part known to humanity.

Animal viruses dangerous for people

A considerable danger of a person also represents viruses that affect animals. Infections fall into a human body together with food - milk, meat, eggs. They are able to develop grave, sometimes incurable diseases, and occur in people with complications.

Top most dangerous viruses that are transmitted from animals.

• Brucellosis.
• Tulara'yia.
• Toxoplasmosis.
• Rabies.
• Ringworm.
• Helmintes.
• Trichinosis.
• Anchroceliosis.

Basic precautions are able to protect against diseases.

1. Personal hygiene.
2. High-quality processing of food.
3. Vaccination of animals.
4. Proper behavior with homemade and wild beasts.

The most dangerous human viruses transmitted by sex

The presence of infections in its body and diseases may not guess enough long time. So, infections that are transmitted by sexually can often flow without any symptoms. As a result, in the absence of a permanent partner, the number of people infected may increase.

1. AIDS is the first in the list of deadly infections. The virus can be maintained in the body for years and let yourself know after 7-10 years.
2. Gonorrhea.
3. Trichomonosis.
4. Chlamydia.
5. Syphilis.
6. Genital herpes.
7. Man papilloma virus.

All listed infections, in addition to AIDS, are healing, however, they leave "their mark", hitting the internal organs and the small pelvis organs. One of the most terrible consequences is infertility.

You can protect yourself from such ailments with a qualitative condom, which has a valid shelf life. From some sores help anti-warnoys used in the first hours after sexual intercourse. They are treated with the mucous membranes of the genital organs, and the chance to infect decreases several times.

And, of course, the best prevention is a permanent sexual partner. It should be remembered that the most dangerous human viruses are not only those that end with a fatal outcome, but all the well-known viruses, because any treatment may be expensive, and long.

Effect of viruses on human health

Finding into the body, viral infection can flow in two forms - acute and chronic. Often the disease is developing secretly when a person does not suspect about her and becomes a carrier (herpes, AIDS).

Ways to transmit viruses are very different, so you need to always be alert. Once overwhelmed by one or another ailment, the body can develop immunity (windmill, Botkin's disease). Often the diseases recur and return to a pair with serious complications. Sometimes it is avoided to facilitate the infection or it helps the vaccination.

The most terrible consequence of viruses is the defeat of internal organs, nervous system and brain, mucous membranes. Some infections are capable of provoking cancer, and the most dangerous viruses in the world are often ending.

Prevention of viral diseases

Of course, it is much safer and cheaper for a person to spend timely prevention of viruses. So it is possible to avoid not only expensive treatment and complications with health, but also save lives.

1. So, the best prevention is personal hygiene. Before eating and after the street, you always need to wash your hands.
2. Only well-processed food, vegetables and fruits must be washed. Products need to be bought in specialized stores.
3. Strengthening immunity should be a rule for each person.
4. More positive - smaller stress!
5. Factory people show quarantine and hospitalization.
6. Do not forget about vaccination. From many diseases make vaccinations in childhood, do not need to refuse.
7. Healthy lifestyle, proper nutrition and vitamins.
8. Safe sex - some of the most dangerous viruses are transmitted precisely by sex.

Viruses that are better to pass in childhood

Viruses are one of the ancient forms of life on the planet. They are known more than a thousand. Some calmly exist next to us, but some can apply a serious human health damage. Among all the infections there are those that are better to overcome in childhood. Child diseases are the most dangerous viruses for adults, especially for pregnant women.

The fact that children are transferred with ease, for an adult can cause complications. Pregnant women represent a special risk group, because the infection can affect not only the mother's body, but also on intrauterine life. Transferred during pregnancy infection cause serious flavors and fetal anomalies.

Top diseases with which it is better to hurt in childhood:

1. Cort (consequences for adult - encephalitis, meningitis).
2. Pig (may cause parotitis, infertility, brain disease).
3. Windmill, rubella (especially dangerous for future mothers. Cat in the fetus of cataracts, vices of the heart, magnification of the brain).
4. Polio. The vaccination from this disease must necessarily make a child. When the disease appears in an adult, it almost always ends with a wheelchair or death.

Technique also sick viruses

The virus is a microorganism with its DNA, which is capable of living and multiply only in another organism. The computer virus is no different from the usual. It is a specially written program implemented in other programs and files and affecting them.

A computer virus can erase absolutely any file itself. There are several signs of infection:

• The program is not working.
• The program works incorrectly.
• Foreign information appears on the screen.
• Files do not open, not read.
• The operating system is not loaded.
• Files on the disk became greater, and the memory is less.

It is impossible to definitely say what the most dangerous virus in the computer, because each of them damages files and programs.

Complete pytody of computer viruses:

• "Friday 13" (Jerusalem) - removes all programs.
• "Cascade of falling letters."
• "Melissa" - an email comes an email "The document requested ...".
• "Letter-recognition" or "Letter of happiness." An email with recognition in love.
• Nimda - creates an administrator's right on the computer.

All viruses are created by experienced programmers for the purpose of hacking and receiving personal gain. However, each poison has its own antidote. The most dangerous computer viruses are subject to "treatment" with antivirus programs or formatting of a hard disk.

In order to prevent the prevention, only licensed programs should be used, visiting only proven sites and use "clean" media.

Conclusion

For his life, a person transfers a huge number of all ages and viruses. Some of him is produced by lifetime immunity, and some can be returned again. Eliminate yourself from different sores will help proper nutrition, personal hygiene and good immunity. Some of the most dangerous viruses fall to a person from animals (rabies, Siberian ulcers, salmonellosis), so it is worth taking care of them. For example, vaccination of animals reduces the risk to get infection several times.

So what is the most deadly dangerous virus on earth? You think that this is a fairly simple question that can be answered, but it turned out that there is not one way to determine the dimension of viruses. For example, this is a virus that kills most of the people (the overall mortality rate) or is a disease that has a high mortality rate, i.e. kills the most number of infected people. For most of us, it will be a disease with the highest mortality rate, it is definitely a death sentence, if you ever get sick it.

Ironically, this is a number of diseases that have a soothing low mortality rate that millions of people actually kill. There is a reason for this - these are viruses that cause the most dangerous diseases, as a rule, killing themselves by killing their owners faster than they can spread. Two particularly good examples of this phenomena are: the Ebola virus, with a 90% mortality of which today has died about 30,000 people and a pandemic of Spanish flu, which destroyed about 100 million people, despite the fact that it has a mortality rate of less than 3%.

In addition to the two indicators, as a common mortality rate and the mortality rate, mentioned above, there is also a historical measurement: what virus killed the greatest number of people throughout history?

Given these various criteria to determine which virus is the most deadly, we will take into account all these indicators so as not only to make up the top 10 viruses, but also to bring some separate statistics at the end of the article.

10. Fever Denge.

Photo. Mosquito

Denge fever is a mosquito infection, which was first described almost 2000 years ago in China. After gradually spreading to other countries with yellow-told mosquitoes (lat. Aedes aegypti), the spectrum of diseases in the XVIII century significantly expanded. It was caused by the slave trade, as well as the activities of people in World War II, when the spread accelerated, especially more dangerous forms of diseases.

In recent years, globalization has influenced dengue fever rates that have increased 30 times compared with the 1960s.

As in many of these diseases, the overwhelming majority of people either have no symptoms or rather weak symptoms are not characteristic of fever. Sometimes a dengue fever is called "Breakbone Fever", which characterizes a strong pain that can be felt in the muscles and joints.

Those who are not lucky, the disease can develop in the "heavy dengue" with a risk of potential death as a result of the hemorrhagic fever of dengue and shock syndrome. This occurs in less than 5% of cases, the main reason for this is to increase the permeability of blood vessels. This can lead to vomiting with blood, damage to organs and shock.

Today, annually in 110 countries with endemic fever dengue, up to 500 million people are infected, which leads to about 20,000 deaths. The gloomy reality is that these numbers will continue to grow.

9. OSPA

Photo. Patient Poland

OSPA destroyed, right? WHO assures that it was not since 1979, however, the United States and the former USSR, conducted scientific research over the virus samples. For some rumors after the collapse of the Soviet Union, some of these samples were missing. Even if the natural smallpox virus is extinct, presumably it can re-be designed from a digital virus genome and inserted into the casing of the poxvirus.

The good news is that at present all the goals of smallpox are extinct in the wild. Although historically, it led to a destructive effect. Ots appeared approximately 10,000 BC, in those days it led to the mass death of people. The osp is inclous and, of course, in those distant times the mortality rate reached 90%.

The most terrible period for people was when there was a sudine researchers brought to a new world in the XVIII century. Accidentally it was done or not, but estimated about half of the population of Australia Australia were killed in the first years of British colonization. The disease also badly affected the population of the indigenous people of North and South America.

Despite the fact that Edward Jenner in 1796 developed a vaccine against a natural smallpox, because of it in the 1800s, about 300-500 million people died.

From the point of view of the appearance of smallpox, especially shocking is that the body is covered by blisters filled with liquid. This can occur in the oral cavity and throat and in some cases of PSP led to such complications as blindness. Mortality from this disease largely depends on the course, which will develop the disease, if it is a malignant and hemorrhagic gas, it will consistently lead to death.

8. Cort

Photo. Child with cute

Most people in developed countries, Cort even distantly consider dangerous. We are accustomed to about 90% of all children by the time they reach 12 years old, it is already converging. Currently, with planned vaccination conducted in many countries, incidence rates have significantly reduced.

But what can shock you, so it is that between 1855 and 2005, the king in the whole world took 200 million human lives. Even in the 1990s, Kori killed over 500,000 people. Even today, after the emergence of cheap and affordable vaccines, Cor is one of the main causes of death among young children, carrying out more than 100,000 lives every year.

Kor led to the greatest devastation in communities, which were not previously exposed. In the XVI century, Kor was delivered to Central America by Europeans. In particular, Honduras in 1531 during the measles epidemic lost half of its population.

In frequent cases, measles leads to fever, coughing and rash. However, complications are a fairly common phenomenon and it is here that the danger is hidden. Approximately 30% of cases, symptoms vary from relatively temperate, such as diarrhea, to pneumonia and inflammation of the brain, they can all lead to death. Other complications include blindness.

7. Yellow fever

Photo. Memorial in Savannah, Georgia

Another massive killer is a yellow fever. Also known as "Yellow Plague" and "Vomito Negro" (black vomiting), this acute hemorrhagic disease led to a number of serious outbreaks over the centuries.

Most people from the yellow fever fully recovered, but about 15% of cases the second, more serious stage of the disease is manifested. In these cases, it may be bleeding from mouth, nose, eye or stomach. About 50% of patients who enter this toxic phase die within 7-10 days. Although in general the mortality rate reaches 3%, during epidemics it reached 50%.

Like most of these viral infections, the yellow fever originated somewhere in Africa. In early colonial years, it was noted that outbreaks in the village among the natives did not lead to serious complications, it was more reminiscent of flu-like symptoms, while the majority of European colonists died. It is believed that such a difference in the severity of the disease is caused by a long exposure to small doses as a child, which leads to some immunity.

It can be argued that there is a certain gloating that the slavery and operation of Africa led to the epidemic in Europe and North America in the XVIII and XIX centuries. Probably the most famous of them was a flash in 1792 in Philadelphia, the then capital of the United States. It was reported that President George Washington fled from the city, while 10% of those who remained, died.

Yellow fever rolled throughout America, carried out in the XVIII and XIX centuries from 100,000 to 150,000 lives.

Today, despite the existence of an effective vaccine, there are regions in which 200,000 people are ill to the yellow fever in the world around the world, carrying out 30,000 human lives every year.

6. Lassa fever

Photo. Electronic micrograph of lassis virus

You may have thought about the fever of Lassa, as about the "easy version of Ebola," but again, she kills so many people every year in West Africa as an ebol in the midst of the 2013-15 epidemic. In addition, the symptoms are easy to confuse with Ebola, they are both classified as sharp viral hemorrhagic fevers. The fever of Lasse infects almost every fabric in the human body and outbreaks usually run through local rats of masters (Mastomys).

If you doubt the danger of Lasse fever, then its biosafety level 4 (BSL-4), which should convince most of you. This is the highest level of biosafety designed to work with pathogens that can cause death and for which there is no vaccine or treatment. To have a general presentation, MRSA, HIV and hepatitis viruses are classified as the 2nd biosafety level.

From the fever of Lassa on average, 5,000 people die every year. Estimated every year more than 300 thousand people are infected in all West Africa. Although most of the most symptoms have no symptoms, but those who have them manifest themselves, mortality is 15-20%. During epidemics, the mortality rate of Lasse fever comes up to 50%. It is not quite similar to the ebola virus or the Marburg virus, but still dangerous indicators.

5. Hepatitis

Photo. Hepatitis C virus

Hepatitis is the name of a series of viral diseases that attack the liver. There are 5 types of infectious hepatitis, which are denoted by letters from A to E (A, B, C, D, E). Of all of them, hepatitis B and hepatitis C, which together for the year they take almost a million lives. They are often transmitted from the mother to the child, but can also be transmitted through blood transfusion, tattooing, dirty syringes and sexual activity.

Hepatitis B reaps the greatest number of deaths for the year (about 700000). This rather inconspicuous disease occurs asymptomatic. Most deaths are the result of the disease, which slowly attacks the liver of a person for several years, which ultimately leads to a liver cancer or cirrhosis. Although an adult hepatitis B infection usually leads to an acute episode of the disease, but it ends with complete recovery. They are infected, as a rule, children who are more predisposed to the development of the disease in the long run.

Although the overall hepatitis mortality rate is lower than hepatitis B, it still kills about 350,000 people annually, mainly in developing countries. The numbers show that about 200 million people (or 3% of the total population) lives with hepatitis C.

4. Raming

Photo. Patient at the last stage of rabies

Frenzy is one of the deadly diseases belonging to the genus of Lissevirus (Lyssavirus). This name is derived from Fox (Lyssa), the Greek goddess of rage, madness and anger, the word itself comes from Latin "madness." This is one of the most terrible diseases of humanity, which is known since ancient times and there is every reason.

The most famous form of rabies is referred to as "angry rabies" and affects 80% infected. This stage includes classic symptoms of confusion, psychomotor excitation, paranoia and terror. An infected person can also exercise hydrophoids (water fear). In this, it would seem strange condition a patient panic, when he gives a drink. Framing infects salivary glands of the back of the mouth, so it can be transmitted at a simple bite. This infection also causes the muscles of the throat to fall into painful spasms, leading to an increased salivation.

Infection of rabies occurs when it bits or scratches an infected animal, usually dogs or bats attacked by a person. Although after bite, some influenznous symptoms may appear, the disease, as a rule, in the incubation period flows without symptoms. It usually lasts 1-3 months, but it may be necessary for years while infection by the nervous system will get to the brain.

Framing is difficult to diagnose and if a suspicious bite is left unnoticed, neurological symptoms may develop. At this stage, this is definitely too late for the patient, rabies have almost 100% mortality, coming within a few days. In fact, only the 6th person survived after rabies and was the first to be Jeanna Gis (Jeanna Giese) in 2005. She was a new approach (Miluoka Protocol) in the fight against this disease, it was introduced into an artificial one and she survived, almost completely recovered. Despite success in this case, this method has an approximately 8% chance of success.

Fortunately, the bite of animal infected with rabies is no longer a death sentence. If you get a treatment in the form of post-contact prevention (PCP) within 10 days, then you have almost 100% chance to survive. There is also the same effective vaccine.

Nevertheless, almost 60,000 people die from rabies every year, mainly in Africa and South Asia. More than one third of these deaths occurs in India, where the dogs are still the main perpetrators. In more detail about this disease and can be found in the other article.

3. Viral hemorrhagic fevers (finnishing)

Photo. Outbreak of Ebola in 2015

If any disease can cause fear in the 21st century, this is viral hemorrhagic fever from the Filovirus family. These include Ebola virus and the Marburg virus, there is no effective treatment, there is no vaccine and mortality reaches up to 90%. Having very unpleasant symptoms are potentially deadly viruses on Earth.

From the point of view of the diagnosis of Marburg and Ebola, clinically indistinguishable. The name of this group of viruses serves as a prompt of some symptoms, it is obvious that these fevers are accompanied by pain in all body, joints, muscles, abdominal pains, headaches. The hemorrhagic aspect is associated with the fact that the prior arts interfere with the blood coagulation mechanism, thereby causing bleeding from any opening of the human body. More than probably, death is usually due to polyorgan deficiency, necrosis of internal fabrics.

Ebola and Marburg usually appeared in isolated villages in Central Africa as a result of small outbreaks that quickly destroyed themselves. However, in 2013, the Ebola virus arrived in the West African Country Guinea, where he was not recognized as such as long as he began to quickly spread. During the next 2 years, the Ebola epidemic has raged in six countries, infecting 25,000 people, among which is about half a died.

The largest flash of the marburg virus was in 2004 in Angola. Of 252 infected died 227, i.e. 90%. During early epidemics, in the Congo, the mortality rate reached 83%.

It is believed that Marburg and Ebola viruses were transferred to people from wild animals. Although the first cases of infection with the Marburg virus occurred with researchers working with African green martyrs, it is believed that bats are the natural owner of this virus. It also applies to Ebola virus, which is why the bats are considered the main carriers of some of the most terrible diseases on Earth.

2. HIV / AIDS

Photo. Virion HIV infect cells

Over the past three decades, AIDS has become the main news, it is a destructive disease. Huge progress in the field of antiretroviral drugs means that the correct reception of drugs from HIV infection is not a death sentence as it was before.

This disease is another one, which originated in Central Africa, where it is millions of years hid in the monkeys populations until it crossed the people in the middle of the 20th century. It is not known how this happened, but it is believed that the monkey VIO (monkey immunodeficiency virus) handed over to people a virus through meat eating, later the virus mutated and now we know it as HIV.

There are suspicions that HIV existed for some time before he became the main news, the first registered event occurred in the Congo in 1959.

The main reason for not finding direct treatment of HIV is the fact that he constantly changes quickly. It quickly reproduces (about 10 billion new individual virions per day) and the degree of mutation is very high. Even in one person, the genetic variety of the virus can resemble a phylogenetic tree with various organs infected with almost various kinds.

Today, about 40 million people live with HIV and mainly in Africa south of Sahara. Unfortunately, only half of those infected people have access to the necessary drugs, because of what is so high, the global level of mortality from AIDS. According to AIDS estimates, about 2 million human lives takes annually, over the past 30 years, the virus has skued more than 25 million people.

1. Influenza

Photo. Patients with spanish flu

The flu is the most widely known virus and it can hardly be called fatal viruses among our list. Everyone was sick with the flu and for most it ended not particularly well. However, every year the flu leads to a large number of deaths and the most vulnerable group of the population are old men, very young and sick. Despite the fact that more than 60 years ago, a safe and effective vaccine was obtained, the flu is still annually leading to death to half a million people.

But this is only a basic indicator, in addition to this, random devastating epidemics occur when virulent virus strains are developing. The "Spanish flu" 1918 is a vivid example of this. As they believed, he infected almost a third of the world population and took up to 100 million lives. During the epidemic, the mortality rate amounted to 20% compared with the usual seasonal flu flu. One of the reasons why Spanish flu was so fatal, was that he killed healthy people, a specific strain caused an excessive reaction of the immune system, which is known as a cytokine storm. Therefore, people with a strong immune system were susceptible to the greatest risk.

Other diseases did not even approach these indicators, which makes the flu is so dangerous. The influenza virus has the ability to often unite and mutate in the form of new strains. Fortunately, currently the most deadly strains differ from the most infectious strains. One of the fears is that a potentially fatal strain of the H5N1 bird flu, which cannot be transmitted from a person to a person, for example, a small genetic "event" will be required to create a possible epidemic. Although today there was only a little more than 600 cases of infection with bird flu, almost 60% of them ended with fatal outcome, which makes it one of the most dangerous diseases for a person.

Computer virus applied by email in the attached file, and after the user opened this file, the virus sent itself to the first 50 addresses in the address book of the postal program Microsoft Outlook..

Today " Melissa"No one will not scare anyone. But to remember about it will still be long. In principle, as well as about the next nine viruses. About the latter, by the way, in honor of " Melissa"And remember. Read

Brain.

This virus in this hit-parade is the most harmless. All because he was one of the first. Discalled through floppy disks. Development lies at the conscience of the Amjata brothers and Basit Alvi ( AMDJAT and Basit Faroog Alvi). These guys launched him in 1986. But detect " nesladnoe"Specialists managed only a year later in the summer.

They say only in the US, the virus infected more than 18 thousand computers. Funny fact: The basis of the development was only good intentions. That is, the brothers wanted to punish local pirates fighting their firm's software.

And back Brain. She took the honorable place in the world of stealth virus. When attempting to read the infected sector, he " substituted"His unexpressed original. It was very difficult to catch this.

Source: SecureList.com.

Jerusalem.

The second name - " Friday the 13th". And the first arose thanks to the country of his appearance - Israel ( in 1988). Than this dangerous " friday"? What downloaded from the floppy disk. And as soon as the time has occurred x ( friday the 13th) - The virus immediately deleted absolutely all the data from the hard disk. In those days, few people believed in the existence of computer viruses. Anti-virus programs almost did not exist at all. therefore Jerusalem. The users were horrified.

Source: classifieds.okmalta.com.

Worm Morris

And this " worm"Woke in November 1988. It blocked the work of computers with its chaotic and uncontrolled reproduction. Because of him, in fact, the whole failed ( not too global for those times) Net. Pay attention: the failure lasted very long, but it managed to cause serious losses. Experts rated them at $ 96 million.

Source: IntelFreePress.com.

Michelangelo ("March6")

“Michelangelo"Rayanil in 1992. He penetrated through the floppy disks on the boot sector, and sat quietly there until March 6th. As soon as the time came, " Mark"Immediately formatted a hard disk. His appearance was on the hand to all companies involved in the development of antivirus software. They then swelled hysteria to incredible scale. Although the virus mocked the whole over 10 thousand cars.

Source: Macacosabetudo.com.

Chernobyl (CIH)

Created his Taiwan student ( in 1998.). At the initials of the latter and named was this malicious software. The essence of the following: via the Internet, email and discs, the virus got into the computer, and hid inside other programs. And on April 26, activated. And it was not easy to erase all the information on the hard drive, but also damaged the computer hardware.

Peak " Chernobyl"Avenue for April 1999. Then more than 300 thousand cars were injured ( most Eastern Asia). And even after everyone crushed information about the presence of such a pest, he was still hiding on computers for a long time, and continued his black divids.

Source: SoftPedia.com.

Melissa.

Come back to " Melissa". Created it at that time, 30-year-old David Smith. The amount of damage to the programmer's brainchild is more than $ 100 million. For this, the attacker was thrown for the bars for a period of 46 to 57 months.

Then Smith was released on bail at $ 100,000, and the case began to drop on the brakes. The hearing was repeatedly transferred, and the prosecutors, so noisy began this case, now keep silence. Jim Smith and his lawyer are also silent.

Source: jrwhipple.com

Iloveyou ("LETTER OF HAPPINESS")

Someone in 2000 thought of writing pretty the cute virus. It came to the mail in the form of a message "I Love You" with a nested file. Users downloaded him and ... A script was settled on the hard disk, which:

• randomly sent letters in incredible quantities;
• removed important files on the PC.

The results are just shocking: damage caused by this " letter“, “crash"10% of all computers that existed at that time. In the monetary equivalent is $ 5.5 billion.

It is the opinion that previously people were hurt much less often, but the truth is that without the necessary level of technical progress it was impossible to determine some viruses and ensure their treatment. Yes, even today, having the opportunity to grow artificial organs and having mastered neurosurgery, humanity does not manage to significantly reduce the list of incurable diseases, moreover, it increases due to the effects of radiation, environmental pollution, poor-quality food, as well as adaptation of viruses and bacteria to Antibiotics.

We collected the most deadly and persistent diseases of the disease and placed them in the rating the most dangerous viruses in the world for manBy describing the main symptoms, the origin and the range of distribution of each of them. Some almost managed to eradicate by vaccination, and some were the main theme of evening news just a week ago.

10. Influenza virus A subtype H5N1 (avian influenza)

It was received by the murder of huge poultry livestock in Southeast Asia, from where it spread across the planet. The greatest damage was caused to countries with poorly developed medicine or suffering from influx of migrants. Initially affected all the types of animals, in addition to a person, but soon got to us. Began as ordinary flu, with a cough and fever, and was able to pick up life about half of those infected only because of the fact that in view of the symptoms typical for the cold, they avoided appeals to the hospital and sought to solve the problem with their own forces. Distribution was stopped by vaccination, because if at the first hit, the immunity copes, then later you lose the chances to get infected, with the exception of rare mutations.

9. Fever Lukho

On the ninth line of the rating of the most dangerous viruses for a person in the world there is a fever, which is not inferior to Ebora in aggressiveness. The only thing that has allowed to prevent the epidemic is a complex transmission method - exclusively tactile contact. The tourist agent was the first victim, then four her attending physicians followed. The main symptoms are abundant bleeding, coma and refusal of the internal organs, but have not yet been able to establish nor the causes of the appearance, nor ways to combat the disease, because it is relatively young - it has not passed half a year from the moment of discovery.

8. Curkopitec (monkeys) Herpes virus B

About 70 percent of the macaque is considered to be media of this ailment. It is extremely easy to get infected, it is enough to get a scratch, or the ingress of the ingredients of the primate on the skin, after which you will have symptoms of ordinary herpes. After a few days, the rashes will be held, but the return path is no longer - herpes in the already settled in nerve cells, first will appear cough and runny nose, which will replace the tremor and loss of consciousness. A total of 17 cases of human infection were recorded, 15 of which with a fatal outcome. It saves only that he is transferred only to monkeys, people need closer contact, which is quite simple.

7. Fever Denge.

Every year about 50 million people in Central Africa are infected every year, which allows you to put a dengue fever in the rating of the most dangerous viruses in the world for a person. There are two types: classic and hemorrhagic, and if the first one is treated extremely effective, the second will leave you 50% chance to survive. The carriers are mosquitoes and bats, as well as primates. I am glad that only areas in the equator area are favorable for distribution, that is, being ill, being a European, is extremely difficult.

6. Fear virus

In the Middle Ages, when the diagnosis in medicine was only born, it was assumed that the demon was mastered by the demon, hence the name occurred, although in practice it is an extremely aggressive form of inflammation of the brain, which first disrupts the work of the nervous system, boding the mind, and then hesitates through the failure of the internal organs. Of all, without exception, they are instilled from rabies at an early age, which significantly increases the effectiveness of treatment after the bites of infectious animals, but to contact the nearest hospital still stands immediately. In general, the forecast is positive, but if you delay, then after 8 days you can already be on the mortal odds.

5. Virus H1N1 (Spaniard)

The number of victims of this disease, originated in Spain and immediately engulfed about half of its population, without less than a royal family, halved along the scale of the very bloody war in the history of mankind. The worst thing that did not exist treatment as such, the recovery depended on the strength of the immunity of each particular person, the diet of its nutrition and the observance of hygienic standards. The name arose during the First World War, where the leading bloody battles of the country decided to avoid Westa on the epidemic, and neutral Spain decided on this desperate step, thereby allowing their citizens to take the necessary precautions, but still lost a month and a half of the total population. In some cities, the graveters died so often that people independently organized fraternal graves.

4. Ebola Fever

West Africa in 2014 chained the attention of the world community, because there was extremely rare, but almost always a fatal virus. After the outbreak, about 15 thousand people, the World Health Organization recognized her threat of a global scale and began searching for a vaccine, which to date was not crowned with success, which is extremely regrettable, because in case of an answer to treatment with antiviral drugs within 7 days after infection The chances of survival make up only 4%. In Europe, Ebola fever did not get widespread due to the high level of medical care, water filtration and significant remoteness from natural foci of distribution. For the first time, this virus was found in the Ebola River area (Democratic Republic of the Congo), 12 years ago, where the first victims of the disease were registered.

3. Dzip virus

Fortunately, the third of the most dangerous viruses for a person in the world was completely eradicated three decades ago, although his manifestations were recorded in the literature since the days of Alexander Macedonsky. But in 1964, a global campaign for vaccination from smallpox was deployed, and by the end of the eighties the disease was completely defeated. The last victim was one of the laboratory orders in the United States in May 1978. The fact is that someone did not give due attention of ventilation, and the room in which she worked was not ventured as follows. Recall that treatments from this virus does not exist today, and death from smallpox comes in just a few days after infection. Distribution in the world of Phase received slaves in the era, when it was brought from Africa.

2. Hemorrhagic fever Marburg

Very similar to Ebola, but much better gives to treatment. The gates in the body are the mucous membranes of the nose and eye, as well as small wounds. It all starts with a sharp increase in temperature, then the cirrhosis damage to the liver and disruption of the nervous system. It is at the emergence of neuralgic symptoms that the greatest mortality is observed, people lose consciousness and no longer come to themselves. Mortality fluctuates around 50 to 90 percent. The body of the deceased from the fever of Marburg represents a biological danger even three months after the burial. The problem is also the possibility of asymptomatic fever flow for the first few days, which significantly reduces the chances of a positive outcome of treatment.

1. Virus HIV (AIDS)

The most dangerous for a person in the world continues to take millions of lives annually. The first victims among the population of civilized countries were homosexuals and drug addicts, which for a long time distracted on its research, spreading the erroneous assumption that it was a lifestyle that leads to such a significant deterioration in the work of the immune system. In 2008, French scientists received "Nobelka" for the opening of the human immunodeficiency virus, and in 2015, first managed to completely heal from AIDS a child born from HIV-positive mother. Unfortunately, for our country, the epidemic of this virus is gaining momentum in the Yekaterinburg region, and the total number of countries infected by the country is about 1 million 100 thousand people. Therefore, try to avoid dubious sexual relations, drug use and trust only those cosmetic salons that follow the standards of sterilization of tools.

The Anna Kournikova virus received such a name for no accident - recipients thought they were loading photographs of sexual tennis players. The financial damage from the virus was not the most significant, but the virus became very popular in mass culture, in particular it is mentioned in one of the episodes of the series of 2002 friends.

2. Sasser (2004)

In April 2004, Microsoft has released a patch for the LSASS system service (local security system authentication server). A little later, a German teenager launched a Sasser worm that exploited this vulnerability on not updated machines. Numerous variations of Sasser appeared in the networks of airlines, transport companies and medical facilities, causing damage to $ 18 billion.

3. Melissa (1999)

Named in honor of the strippers from Florida, the Melissa virus was designed to distribute by sending a malicious code 50 to the first contacts in the Microsoft Outlook address book of the victim. The attack was so successful that the virus infected 20 percent of computers around the world and damaged $ 80 million.

The Creator of the Virus David Smith (David L.Smith) was arrested by the FBI, spent 20 months in prison and paid $ 5,000 finished.

While the majority of malicious programs of our list caused Zeus (Aka Zbot) in initially a tool used by a criminal grouping.

Troyan used phishing and keyloging techniques for theft of bank accounts for victims. The malware successfully kidnapped $ 70 million from victims.

5. Storm Trojan (2007)

Storm Trojan has become one of the fastest spreading threats, because three days after its release in January 2007, it reached an 8 percent level of computers from all over the world.

Troyan created a massive botnet from 1 to 10 million computers, and due to its code change architecture every 10 minutes, Storm Trojan turned out to be very resistant malicious.

Iloveyou worm (a letter of happiness) masked under a text file from a fan.

In fact, the love letter was a serious danger: in May 2000, the threat spread to 10 percent connected to the network of computers, forcing the CIA to disable its servers to prevent further distribution. Damage is estimated at $ 15 billion.

7. SIRCAM (2001)

As many early malicious scripts, Sircam used social engineering methods to force users to open an email attachment.

The worm used the random Microsoft Office files on the victim's computer, infected them and sent malicious code to the address book contacts. According to the study of University of Florida, Sircam caused 3 billion dollars of damage.

8. Nimda (2001)

The Nimda worm released after attacks on September 11, 2001, many attributed a connection with Al-Qaeda, but it never has been proven, and even the Attorney General John Eshkroft denied any connection with the terrorist organization.

The threat spread across several vectors and led to the fall of banking networks, networks of federal courts and other computer networks. Nimda cleaning costs exceeded $ 500 million in the first few days.

Having occupied only 376 bytes, SQL SLAMMER worm contained a large number of destruction in a compact shell. The worm turned off the Internet, Call Center for Emergency Services, 12,000 Bank of America ATMs and disconnected most of the South Korea from the Internet. The worm was also able to disable access to the global web at the NPP in Ohio.

10. Michaelagelo (1992)

The Michaelagelo virus has spread to a relatively small number of computers and caused a small real damage. However, the concept of the virus involving the "blowing computer" on March 6, 1992 caused a massive hysteria among users who repeated every year at this date.

11. Code Red (2001)

The Code Red worm, named after one of the varieties of the Mountain Dew beverage, infected the third set of Microsoft IIS web servers after the exit.

He was able to break the performance of the site whitehouse.gov, replacing the main page by the message "HaccED by Chinese!". Damage from Code Red worldwide is estimated at billions of dollars.

12. Cryptolocker (2014)

On computers infected with Cryptolocker, important files were encrypted and redempted. Users who paid hackers more than $ 300 million in Bitcoins got access to encryption key, the rest lost access to the files forever.

Trojan Sobig.f infected more than 2 million computers in 2003, paralyzing Air Canada airline and triggering a slowdown in computer networks around the world. This malware has led to 37.1 billion cleaning costs, which is one of the most expensive recovery campaigns for all time.

14. Skulls.a (2004)

Skulls.a (2004) is a mobile Trojan, which infected Nokia 7610 and other devices on Symbos. The malicious program was intended to change all the icons on infected smartphones on the funny Roger icon and disconnect all the functions of the smartphone, except for making and receiving calls.

According to F-Secure Skulls.a, caused insignificant damage, but Troyan was cunning.

15. Stuxnet (2009)

Stuxnet is one of the most famous viruses created for cyber war. Created as part of the joint efforts of Israel and the United States, Stuxnet was aimed at the uranium enrichment systems in Iran.

Infected computers managed centrifuges to their physical destruction, and reported to the operator that all operations pass in normal mode.

In April 2004, MyDoom was named by the TechRepublic portal "The worst infection for all the time", for which there are quite reasonable reasons. The worm has increased the download time of pages by 50 percent, blocked with infected computers access to anti-virus sites and started the attack on Microsoft's computer giant, causing maintenance failures.

MYDOOM cleaning campaign cost 40 billion dollars.

17. Netsky (2004)

Netsky's worm, created by the same teenager who developed Sasser, walked around the world with an email attachment. The P-version of Netsky was the most common worm in the world two years after launching in February 2004.

18. Conficker (2008)

The conficker worm (also known as DOWNUP, DOWNADUP, KIDO) was first detected in 2008 and was designed to disable antivirus programs on infected computers and blocking automatic updates that could delete the threat.

Conficker quickly spread through numerous networks, including the defense ministry networks of Great Britain, France and Germany, causing 9 billion damage.

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