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At what degree does the HIV virus die? AIDS how long lives in the air. How long

Over the past 30 years, immunodeficiency has been considered one of the most dangerous pathologies in medicine. To protect yourself from infection, you need to clearly know under what conditions the virus lives and how long HIV outside the body can retain its properties. It is important to understand how long the HIV (AIDS) virus lives outside the body in order to be able to avoid infection. In addition, this information is necessary for physicians to carry out high-quality processing of instruments.

Does HIV live outside the body?

Yes, HIV lives outside the body, but only under favorable conditions and not for long. There is no need to be afraid of becoming infected with a microorganism through household items or food, since the virus does not persist on them. The best method of prevention is the absence of unprotected sex, the use of disposable medical equipment and high-quality cleaning in public places.

If it is possible to come into contact with the virus, you should immediately contact the nearest AIDS center within 24 hours, where free drugs are issued for emergency prevention of infection with a dangerous pathology. In these institutions, you can take an analysis to determine the immunodeficiency virus in the blood and receive treatment completely free of charge.

How long does the HIV virus live?

The AIDS virus lives in the human body for about 48 hours. During this time, he manages to infiltrate a human cell and use its genotype to form daughter virions, which are produced in the amount of 1 billion per day. The vital activity of HIV infection is based on a decrease in the reactivity of the immune system due to the defeat of T-helpers, which the pathogen uses for reproduction.

Outside the human body, the virus is not stable, which is the reason for the impossibility of infection in everyday life. However, in the sun, in a humid and warm environment, the pathogen persists longer, so preventive measures should not be neglected.

How long does the AIDS virus live in human blood? In this biomaterial and its products, HIV can persist for a very long time. In this state, the virus is able to survive very low temperatures without losing its contagiousness. In this regard, the control of blood donors is becoming increasingly strict. It is problematic to investigate how long HIV lives in the blood at high temperatures, since at 90 ° C or more the protein of the material folds, and the ability to determine a living cell of the human immunodeficiency virus is lost.

Where does HIV live in the human body? In the body, a pathogen can infect any cell, but the greatest number of viruses can be found in vaginal secretions, saliva, semen, and human blood products. These substances are the main medium for the spread of the virus among humanity. It is upon contact with one of these materials that most carriers become infected.

How long does HIV live outside the body, being in biological material?

The virus has the ability to retain its properties for a long time, being in the physiological secretions of a person. Even if the secretion temperature drops to 0 °C, this will not affect the viability of the microorganism in any way. The AIDS virus lives outside the human body only in such an environment, because favorable conditions for it have been created there. Recent studies show that infants become infected from sick mothers through breast milk. Due to the large amount of nutrients, the virus can remain in its composition for a very long time. In this regard, all young mothers who are immunocompromised are given mixtures for full-fledged artificial feeding of the child free of charge.

How long does the HIV virus live in water and food?

Transmission of the pathogen through water has not been confirmed by any studies. Therefore, the opinion that it is possible to become infected when bathing in a reservoir or through drinking water is not plausible. If you are injured while swimming with a needle or other object that may contain contaminated blood, you should contact the nearest AIDS center for preventive treatment.

How long does HIV live in the external environment? As a rule, no more than 1-2 minutes, after which it loses the ability to become infected. Through food, drinking water and other household items, the pathogen is not transmitted. This means that as soon as the virus comes into contact with oxygen atoms, its life ends.

Knowing how long HIV lives in the environment, it can be argued that it is impossible to get infected by airborne droplets. All known facts state that the causative agent of AIDS does not have protective properties against the influence of the external environment on its shell.

How long does the HIV virus live at low and high temperatures?

The pathogen can remain viable for a long time at low temperatures. Under such conditions, it becomes enveloped and becomes the so-called virion. These are stable forms that can persist for a long time under adverse conditions. Being in a favorable environment, viruses begin to multiply, but when they get into negative conditions for them, they hide inside the cells of the body and wait for the opportunity to manifest themselves.

Outside the body, the HIV virus does not live long. The virus dies when the environment is heated to 56 ° C for half an hour. At a temperature of 100 °C, HIV dies within 60 seconds. This fact must be taken into account when disinfecting instruments and processing the patient's clothing.

How long does the HIV virus live in the external environment, on instruments?

On instruments, the pathogen can only be in case of contact with vaginal secretions, saliva, semen or blood. When these fluids dry out, the infection quickly dies. In this case, the danger is more caused by hepatitis viruses, which can stay on the instruments for a long time and remain contagious.

How long does the HIV (AIDS) virus live outside the human body when it is exposed to chemicals? The causative agent of immunodeficiency is very sensitive to any detergent chemicals. An excellent substance for destroying a microorganism on a variety of surfaces is a 0.5% sodium hypochlorite solution. Upon contact with this solution, HIV dies instantly. A 70% solution of ethyl alcohol destroys the pathogen within 60 seconds. Therefore, before using someone else's razor, treat the item with alcohol for two minutes, but it is better to avoid such situations altogether.

Knowing whether HIV lives outside the body, you can not worry about infection during communication and contact with the patient. Subject to the culture of sexual relations and hygiene standards, the likelihood of infection is significantly reduced.

Recently updated!

Under certain conditions, the HIV virus can survive outside the body for several weeks.

Survival depends on what body fluid he is in, the volume of this fluid in the body, the concentration of the virus in it, temperature, acidity, and exposure to sunlight and humidity.

Questions regarding the survival of HIV outside the body are often of concern to people who have had contact with bodily fluids. Concerns about accidental transmission of HIV also drive many people crazy because of the possibility of accidental contact with spilled blood, dried blood or other bodily fluids, even in trace amounts.

It is important to keep in mind that although HIV can live for some time outside the body, no HIV infection has been reported as a result of contact with spilled blood, semen, or other body fluids, although many healthcare workers come into contact with HIV-infected body fluids ( we are talking about spilled, lying on the surface, and not in the needle, for example).

However, awareness of the possible persistence (retention of the virus in a functionally active state) of viable HIV in body fluids requires sanitary and epidemiological control over the safety of medical procedures.

How to determine the potential risk of HIV infection?

  • Firstly, there must be HIV in the blood, semen, vaginal fluid or breast milk . It's obvious, but sometimes we're afraid of where HIV isn't even there. HIV does not survive in the air or in an acidic environment, i.e. it dies in the stomach.
  • Secondly, just touching the blood with HIV is not enough, the skin protects. Those. a specific route of infection is needed: intercourse, someone else's syringe, needle, breastfeeding.
  • Thirdly, there should be a "gateway" for HIV: wounds, sores, damage to the skin, mucous membranes.

HIV does not penetrate intact skin.

  • Fourth, there must be a sufficient amount of the virus in the biological fluid, human secretions. Therefore, HIV is not transmitted through saliva, urine, tears, there is an insufficient concentration of the HIV virus necessary for infection.

Even if you just touched the syringe with the remnants of HIV-infected blood, you will not get infected!!!

Let not the hand of the giver fail

Project "AIDS.HIV.STD." — a non-profit, created by volunteer experts in the field of HIV / AIDS at their own expense to bring the truth to the people and be clear in front of their professional conscience. We will be grateful for any help to the project. May you be rewarded a thousandfold: DONATE .

HIV survives

HIV is dying

  • from the sun and UV radiation;
  • from soap, alcohol, iodine, a solution of brilliant green (brilliant green);
  • from temperatures above 60 degrees C, boiling;
  • gradually in an alkaline or acidic environment: at a pH below 7 or above 8 *.
  • in Pepsi-Cola, Coca-Cola, because their pH is acidic, around 3.
  • gradually in sea water.

*This is why the risk of contracting HIV infection in a healthy woman is reduced by an appropriate degree of acidity in the vaginal fluid.

Detail, nuances

In syringes

  • HIV can survive in syringes for up to 7 days at 27⁰C to 37⁰C.
  • HIV can survive up to a month in syringes after they were recruited and released HIV-infected blood.

"Survival of HIV-1 in syringes". Abdala N, Stevens P.S., Griffith B.P., Hamer R. Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, CT, 06520-8034, USA.

A study of blood collected from more than 800 syringes with blood residue and stored for various periods of time showed that HIV could be isolated from 10% of syringes after 11 days from less than 2 microliters of blood, but 53% of syringes contained 20 microliters of blood. Longer survival of HIV was associated with storage at lower temperatures (less than 4 degrees C), at higher temperatures (from 27 to 37 degrees) the AIDS virus died 100% after 7 days.

"Survival of HIV-1 in Syringes: Effects of Storage Temperature." Abdala N, Reyes R, Carney JM, Hamer R. Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, CT, 06520-8034, USA:

“This study was conducted to determine the effect of storage temperature on the survival of HIV-1 inside syringes. At 40 gr. With 50% of all syringes contained viable HIV-1 at 42 days storage, which is the longest shelf life tested.

At room temperature (20 degrees C), the last day that syringes with 2 µl of infected blood were positive was day 21, and viable HIV-1 was recovered from 8% of the syringes.

The last day that the 20 µl syringes were positive was day 42 and viable HIV-1 was recovered from 8% of the syringes.

Above room temperature (27, 32, and 37 degrees C), the chance of viable HIV-1 syringes being delivered when storage times exceeded 1 week decreased to less than 1%.

The temperature at which injecting drug users can store their used syringes will vary depending on the climate, time of year and circumstances faced by the drug user. Survival of HIV-1 in contaminated syringes varied across temperature ranges, and this may be a factor influencing transmission of HIV-1 through a syringe.”

In blood

  • At room temperature in a drop of blood, HIV feels stable and can live a week in dried blood at 4 gr. FROM.

in semen

  • Survival studies of HIV in seminal fluid outside the body have not been conducted, but in laboratory studies, very low concentrations of the HIV virus were found in semen outside the body.

In corpses

  • HIV can survive in organs and corpses for up to 2 weeks.
  • The AIDS virus capable of infection was isolated from human corpses between 11 and 16 days after death, the corpses were stored at a temperature of 2 gr. C. It is not yet clear how long HIV can survive in decaying corpses at room temperature, but HIV was isolated from organs stored at 20°C up to 14 days of storage after death. HIV was not detected in sufficient quantities for infection after 16 days of storage, indicating that such corpses are less dangerous for gravediggers and pathologists.

PH

  • HIV can only survive at a pH of 7 to 8, optimal for it is 7.1. That is why it does not survive well in snot, urine, vomit, vomit.

In the cold

  • HIV does not die from the cold, the lower the temperature, the higher the likelihood of HIV survival.
  • HIV survives at very low temperatures, when deep frozen, it is perfectly preserved, for example P freezing the AIDS virus(HIV, the HIV virus is the same) at minus 70 gr. the virus was well preserved and did not lose its infectious properties.

In water

Water itself destroys HIV and quickly reduces the contagiousness of the virus. Moore's research shows that tap water is not good for HIV survival and that chlorinated water inactivates the virus completely.

"Survival of human immunodeficiency virus (HIV), HIV-infected lymphocytes, and poliovirus in water." Mur B.E. Journal of Applied and Environmental Microbiology (AEM) 1993, May; 59(5): 1437-43. Division of Microbiology, University of Texas Medical Branch, Galveston 77555-1019.

HIV loses its infectivity within hours of immersion in tap water.

The osmotic pressure of water disrupts the protein-lipid membrane needed by HIV to infect target cells. Chlorine and ammonia, which are present in tap water and wastewater, can act as virucides to kill HIV.
No study has provided a viable, routine scenario for HIV transmission through sewage or through biowaste left over from wastewater treatment.

Scientists have studied the survival of HIV in faeces, sewage and biological waste by inoculating samples of the HIV virus directly into these media.

It is important to note that the collected wastewater samples contained a much higher amount of the virus than in the city's wastewater collection and treatment system.
Casson et. et al. cultured HIV in samples of non-chlorinated secondary wastewater from conventional wastewater treatment plants. The seeded virus lost most of its infectivity within 48 hours. The results were similar in samples of primary effluent contaminated with HIV. In one experimental set, free and cell-bound HIV, seeded in dechlorinated tap water, lost 90 percent
infectivity within two hours and 99.9 percent infectivity within eight hours.

“Survival and Recovery of Selected HIV in Water and Wastewater” Casson, Leonard W., Michael O. D. Ritter, Lisa M. Cossentino, and Phalguni Gupta. "Survival and Recovery of Seeded HIV in Water and Wastewater." Water Environment Research 69, no. 2 (1997): 174-79.

In another experiment, during which blood with HIV got into tap water, HIV was found not capable of infection. In this way, water itself is an unfavorable environment for HIV infection.
HIV was not detected in real raw sewage samples collected from city wastewater treatment plant. Palmer et al. found no detectable levels of HIV, despite examination of streams into which sewage from at least one major medical research facility was discharged. Even a large amount of contaminated blood discharged into the sewer is diluted by the much larger flow of water in the sewer system.
Also, many medical institutions are disinfecting
material before disposal. In any case, the fragility and dependence of HIV on the host precludes the survival of the virus in the sewer system and wastewater treatment.

However, researcher Tames Water proved that HIV can survive in sewage for several days in LABORATORY conditions.

"Human Immunodeficiency Virus Survival in Water, Wastewater, and Seawater." Slade, J.S. & Pike, E.B. & Eglin, R.P. & Colbourne, J.S. & Kurtz, J.B.. (1989). Water Science & Technology. 21.55-59. 10.2166 / wst.1989.0078:

“Drinking water treatment serves as an effective barrier against waterborne transmission of enteric viruses. Current practice achieves a standard of less than 1 cultured enterovirus per 1000 liters of treated water. The likely susceptibility of HIV to water treatment processes was determined in the laboratory by comparing its environmental resistance with poliovirus 2, for which quantitative information already exists. HIV cultured in a human T cell line was added to samples of dechlorinated drinking water, settled raw sewage, and seawater. They were incubated at 16°C and sampled for 11 days. HIV was determined by serial dilution and subculturing, followed by analysis of fluorescent antibodies to infected cells and using enzyme-linked immunosorbent assay for p24 antigen. The survival of herpes simplex virus and poliovirus type 2 was analyzed in parallel. The mean time required for a ten-fold reduction in HIV concentration was calculated as 1.8 days in tap water, 2.9 days in wastewater, 1.6 days in seawater, and 1.3 days in tissue culture fluid controls. A 10-fold degradation of poliovirus 2 occurred after 23-30 days in wastewater, seawater, and tissue culture fluid, but there was no significant reduction in tap water over 30 days. Herpes simplex was the most susceptible virus, requiring only 1.4 days to be removed from wastewater. Controls in tissue culture fluid showed no significant change over 7 days. These tests show that while HIV was more resistant than herpes simplex virus, when it was associated with organic matter found in wastewater, it was more susceptible than poliovirus, an enterovirus widely used as a measure of the effectiveness of water treatment processes. This sensitivity makes it extremely unlikely that HIV poses any threat to the sanitized water supply. "

There is currently no way to completely kill the HIV virus in the human body. The disease leads to irreversible damage to many organs, which is accompanied by a decrease in the quality of life and its significant reduction.

Due to the fact that HIV can only be killed outside the human body, research has established under what conditions it dies. This knowledge is used in methods for preventing the spread of infection and decontaminating medical and other instruments that may come into contact with the patient's blood.

At what temperature does HIV die?

To find out at what temperature AIDS dies, it is necessary to isolate the pathogen and evaluate its viability in various environments. To conduct such experiments, chicken embryos are most often used, into which infected material is introduced. After the presence of the virus in the embryo is confirmed, its study begins.

Based on the experiments carried out, it can be concluded that the retrovirus dies at a temperature of 50-70 ° C, subject to exposure for 30-40 minutes. To determine under what conditions and at what temperature HIV dies instantly, many experiments were carried out using infected blood of patients. Based on research data, it can be stated that at 100°C or more, the virus loses activity instantly. Therefore, to disinfect the patient's belongings, it is enough to boil them for several minutes.

Not all objects can be disinfected in this way, so it was found out how quickly HIV would die at a lower temperature. It has been established that temperatures of 10-15°C lead to a slowdown in the vital activity of the pathogen and its slow death, while levels of 50-60°C contribute to the almost instantaneous death of the immunodeficiency virus. It can be concluded that in this temperature range, HIV dies quite quickly.

At what temperature does the AIDS virus die outside the human body?

Outside the human body, the pathogen is viable for less than a minute. Therefore, it is believed that it is almost impossible to get infected with HIV in a bloodless way. Since the theory of the structure of a pathogenic cell is calculated only mathematically, it is impossible to find out what changes occur in a microorganism when it interacts with the environment. The only reliable result can be obtained when conducting an experiment with chicken embryos in vitro. It shows how long HIV dies outside the body, and whether it is possible to cultivate it in this way. Based on this study, it can be stated that at temperatures below 35.0°C outside the human body, the retrovirus dies almost instantly. And the cultivation of a microorganism in chicken embryos is real, but not for long.

Does the temperature of the disinfectant solution affect the virus? It dies under temperature conditions of 50 ° C, so if you treat surfaces with liquids of this temperature regime and above, you can kill the AIDS virus with a probability of more than 90%. However, knowledge of the temperature at which the HIV virus dies is often not used, the pathogen is sensitive to any even cold disinfectants.

At what temperature does HIV die when exposed to UV rays? During the irradiation of chicken embryos with ultraviolet rays, scientists wanted to know how long HIV dies under such influences. It quickly became clear that ultraviolet rays do not have a detrimental effect on the virus. In connection with this fact, it makes no sense to talk about the harmful effects of sunlight on the pathogen.

Under what other conditions does HIV die? The HIV virus dies on contact with oxygen molecules within a few minutes. This is evidenced by the impossibility of transmitting the infection by airborne droplets and through household items. Moreover, the higher the humidity in the environment, the greater the likelihood of its preservation as a biological species.

In what environment does the AIDS virus die? The AIDS virus dies when the environment in which it is located is highly oxidized. At the same time, humidity will not affect its activity.

At what temperature does the HIV virus die in an alkaline environment?

Alkaline environment contributes to the preservation of the pathogen. Therefore, the human body is an excellent reservoir for its habitat. Under such conditions, a retrovirus can multiply and produce billions of virions per day with the help of body cells, while the latter are more sensitive to environmental changes than the pathogen itself.

The actual evidence that the microorganism is perfectly preserved at a temperature of +37-37.5 ° C in alkaline conditions is the increased risk of infection with immunodeficiency in women who often suffer from sexually transmitted diseases. These pathologies are accompanied by a change in the vaginal environment to an alkaline one, which enhances the reproduction of microorganisms that cause gynecological diseases. The temperature of the internal organs of a person is 37-37.5 ° C, and in the tissues the virus multiplies rapidly, affecting more and more structures.

At what temperature does the HIV (AIDS) virus die in the human body? In the body, AIDS dies only under the influence of antiviral drugs, so their intake is mandatory. Exposure to temperature can lead to fatal consequences for humans. With the onset of unfavorable conditions for the life and reproduction of HIV, it quickly penetrates into the cell and can remain there for several years. With the resumption of appropriate conditions, it resumes its immunotropic and neurotropic actions.

At what temperature does the AIDS virus die on metal instruments?

Such devices are best cleaned and disinfected. They can be treated at low and high temperatures with various formulations and disinfectants.

In medical institutions, the method of processing instruments is different, but each of them is configured specifically to destroy viruses and bacteria that may be on the surface of objects. For example, in nail salons they use the treatment of tools with disinfectants of universal action and the calcination method immediately before use. It must be remembered that after such actions the instrument is considered sterile for 5-6 hours. In this regard, when visiting beauty salons, it is necessary to ensure that the objects that the client comes into contact with are processed immediately before use. If you need to quickly disinfect the devices, calcination is best. In this case, the temperature should reach 100-120 ° C. HIV dies at a temperature that reaches such numbers, almost instantly.

Using this knowledge, one can not only avoid accidental infection with immunodeficiency, but also prevent the introduction of other pathogens into the body. HIV is considered one of the vulnerable infections, so it is not difficult to kill it in the external environment.

With possible contact with the pathogen, one should not hope for a good immune response of one's body and that the virus may have died at one of the stages of infection. You should immediately seek emergency medical attention within 24-48 hours. Statistics show that emergency prophylaxis prevents the development of AIDS by 99.9%, while retroviral treatment only weakens the action of the pathogen in the body and slows down its reproduction. Many medicines have been created in the world that can slow the spread of infection, but do not kill the HIV virus.

Hundreds of suppliers bring hepatitis C medicines from India to Russia, but only M-PHARMA will help you buy sofosbuvir and daclatasvir, while professional consultants will answer any of your questions throughout the therapy.

Human immunodeficiency is one of the most dangerous diseases all over the world in recent decades. The risk of infection is partly determined by how long HIV lives in the air and in other environments, provided that they are located outside the human body.

On the issue of vitality and persistence of the immunodeficiency virus, there are different, often conflicting opinions. We offer to find out what is the truth about the time of existence of HIV outside the human body.

How long can HIV live outside the body

How long does the HIV virus live in the environment? Research is being carried out by scientists using virus concentrations 100,000 times higher than those found in nature. With their use, HIV remains alive for 1-3 days from the moment of drying of the biological fluid (sperm, blood, vaginal secretions).

The resistance of the virus in natural concentration is much less - it is not able to live up to 3 days outside the human body. The period of his "life" is reduced" to just a few minutes. If it were more stable in natural concentrations, then in practice there would be situations of domestic infection.

The inability of HIV to live outside the human body prevents infection by:

  • clothing,
  • towels
  • furniture,
  • food,
  • personal hygiene products.

Survival Factors

How long does HIV live outside the body determined by the temperature regime of the environment and the volume of the virus in the biological fluid (viral load). Studies conducted in laboratories have shown that the virus in the highest concentration (100,000 times higher than natural) remains viable for 3 days, provided that the temperature is stable and the humidity is optimal. However, they cannot be reproduced in the natural environment without special instruments and equipment!

open environment

Studies have shown that HIV in artificial concentration dies in the open air in the amount of 90-99% in a few hours. In theory, the transmission of the virus in its natural state outside the human body is not only slow, it reaches zero.

No carrier of the immunodeficiency virus has been infected through contact with any surface, ingestion of food or water. "Fragile" HIV instantly dies when exposed to hot (even warm!) Water, soap and disinfectants, alcohol (alcohol solution).

HIV dies after a few minutes if it enters the water along with the biological fluid, even under conditions of high viral load, which makes it impossible to infect the virus through water or air.

HIV survives

The immunodeficiency virus lives and multiplies exclusively in certain human biological fluids - blood, vaginal secretions, breast milk, semen. Outside the body, it is rapidly deactivated, BUT in blood prepared for transfusion, it is able to live for several years, and in serum subjected to slow freezing, up to 10 years.

The viability of HIV contained inside a syringe or hollow needle is significantly higher. Its stability is determined by the following factors:

  • the amount of blood in the needle
  • humidity
  • the volume of the virus
  • temperature regime.

Attention! The volume of blood in the syringe depends on the parameters of the needle and the presence (lack) of its ability to draw the biological fluid inside.

Studies have shown that HIV can be contained in some needles for up to 2 days at a constant temperature. Viability of the virus decreases with time - after 2-10 days it was isolated from only 26% of the needles used during the study.

The World Health Organization (WHO) says that for preventive purposes, to prevent injection infection, it must be assumed that the used syringe can contain HIV for 3-4 days (provided that it has not been sterilized!).

HIV is dying

The low contagiousness of the virus is due to its inability to exist outside the human body or without nutrient media.

HIV dies under the following conditions:

Wednesday Parameter Deactivation period
Temperature rise + 56 o C Instantly
Temperature drop - 1 o C 24 hours (assuming slow freezing)
Sudden temperature change (defrost) From 0 to + 5 o C Instantly
Drying Absolute absence of moisture Instantly
Exposure to chemical detergents Wet cleaning During surface treatment

Attention! At what temperature does AIDS die? HIV contained in human blood (subject to maximum viral load) dies at a temperature of + 60 ° C and above.

The viability of the virus outside organic fluids is low, which is why among experts it is called "sissy".

The body's resistance to HIV

A whole "set" of genes in the body of living beings predetermines their resistance to various viral infections. Conducted laboratory studies on mice, rats, guinea pigs and other animals have shown that their body is resistant to HIV and infection is impossible.

Monitoring of the incidence among the US population has shown that Americans of European descent are more resistant to the virus, while Africans and Asians are susceptible to infection (their resistance indicators are almost zero).

In 1995, several American researchers discovered a substance produced in the cells of the immune system and having CD 8 molecules. It has been shown to stop the reproduction and spread of HIV in the body. The protective substance is hormone-like molecules called "chemokines".

They take the form of reduced proteins that attach to receptor molecules located on immune system cells as they move towards the site of infection. Currently, research is ongoing, experts are trying to find " gates through which the virus enters the immune cells. This will allow us to understand which receptors chemokines interact with.

The main "culprits" of infection of the body are the receptor molecules CD 4 and CCR 5. In 1996, researchers reported that the normal CCR 5 receptor gene was found in 1/5 of patients. It turned out that in 3% of people who did not become infected with HIV (subject to their contact with positive patients), this receptor is altered - mutagenic.

Further examination of 2 homosexuals showed that, despite sexual contacts with infected partners, the mutagenic receptor CCR 5 is formed in their cells. It is not able to interact with the virus, so infection is impossible.

However, some patients' resistance to HIV is temporary. This is observed in people who have inherited the "rescue" mutation from their parents. Some time after infection (3-4 years), the level of immune cells in these patients decreases by 5 times, which leads to the development of complications.

The highest indicator of resistance to the virus, which arose in connection with the mutation of the cells of the immune system, can be traced in representatives of the Finno-Ugric group, namely:

  • Finns
  • Hungarians
  • mordvin,
  • Estonians.

Attention! They have mutagenicity in one of the 2 paired genes reaches 16-18%, while among Africans the figure is only 1-2%.

Consequently, insects, birds, animals and other creatures (with the exception of some species of monkeys) and people in whose bodies two mutagenic genes are present at the same time remain immune to HIV. Among the residents of Moscow, about 0.6% are resistant to HIV (according to data for 012).

HIV terrorism - is it worth it to be afraid?

In recent years, citizens' appeals related to "AIDS terrorism" have become more frequent, when an unknown person pricks them with syringes with infected blood in public transport, a nightclub or just on a city street and leaves a note with the phrase " Now you are the same" or " Now you are one of us».

According to experts, infection in this way ruled out. Outside the human body, the virus quickly loses its viability, so a simple prick or even a scratch will not be enough to infect.

Instead of output

The virus does not live in an open environment - when it enters the air or water, it dies within a few minutes. However, it is more stable when kept in biological fluids if favorable conditions are created in the environment ( HIV can live in frozen semen for up to several months).

Get infected in the household environment - impossible. Currently, no cases of infection through shoes, clothes, food or water have been recorded. It is worth fearing only unprotected intercourse with unknown partners, blood transfusions and transmission of the virus from mother to child during childbirth, as well as during subsequent breastfeeding.

Remember that HIV is not a death sentence. Thanks to antiretroviral therapy, thousands of people around the world are living full lives with the infection!

Source: medsito.ru

The immunodeficiency virus (monkeys and humans) was isolated in the 80s of the 20th century. It is known that the human version of this virus under certain conditions can cause a deadly disease - AIDS. The gradual loss of the body's defenses leads sooner or later to the death of the sick person.

These general data have given rise to many rumors about the virus itself, its survivability and methods of transmission to humans.

Several ways of human infection with the immune deficiency virus have been proven.


Important! Even with such an obvious probability of infection, the virus does not always "take root" in the body. For this, several conditions must be met.

Prerequisites that increase the likelihood of infection:

  • a large amount of contaminated material;
  • prolonged and direct contact with blood;
  • reduced body resistance (for example, after a serious illness or during the neonatal period, when immunity has not yet been formed).

Video - The first symptoms of HIV

Factors unfavorable for transmission of infection

Despite the excitement that arose around the immunodeficiency virus at the end of the 20th century, and also contrary to the myths created at the same time, the spread of the infection did not become fatal for mankind. This is due to the peculiarities of the virus itself and the possibility of protection against it, subject to elementary rules.

Observations over more than a third of a century have shown that HIV is not transmitted:


Important! In case of accidental contact of body fluids from the body of a person known to be infected with HIV on an open wound, it is necessary to seek preventive care in a medical institution.

Features of the virus

The low contagiousness of HIV is explained by its inability to exist outside the human body or without nutrient media. The conditions for the death of the virus, see the table.

0
TermsIndexDecontamination time
Ambient temperature increase+ 56°CInstantly
Temperature drop- 1°CDay (with slow freezing)
Temperature drop- 10°С10 days (with quick freezing)
defrosting0 – +5°CInstantly
Drying

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