Why some people do not get sick twice: developing immunity, vaccinating

Why do not people get sick twice in some diseases? All because of the fact that he is developing immunity for a particular disease. There are not many such ailments. To protect the body from infection, vaccination is done.

A list of diseases that do not manifest themselves twice

Allocate such pathologies, which man is ill only once in his life:

• Black smallpox;
• parotitis;
• rubella;
• chickenpox;
• measles;
• Encephalitis and others.

How to protect against such diseases?

Many are worried by the questions about why some diseases a person does not get sick twice, whether it is possible to protect oneself from infection by them. Doctors singled out a few rules. If you adhere to them, it is believed that the risk of contracting diseases decreases. Among them are the following:

1. It is required to ventilate the bedroom, as a person must breathe fresh air.
2. You need to wash your hands, especially after coughing, transport, toilet.
3. You should go in for sports.
4. It is required to do the vaccination. It acts as a preventive measure against infection.
5. It is necessary to strengthen immunity, use vitamins, eat right.
6. In time, consult a doctor if the condition worsens.

The appearance of immunity after a disease

When asked why some people do not get sick twice, there is a simple answer: after the transferred pathology, the body develops immunity. The microorganism that provokes the disease has a unique antigen. Antibodies have the ability to recognize it. Cells, first encountering microbes, determine the antigens, and then produce antibodies against them.

Therefore, in the case of infection with the virus, for example, chicken pox, the body starts the processes of producing antibodies that are able to fight microbes. Subsequently, some antibodies will be lost, but they will leave a memory in the cells, which will provide a lifelong immunity to the pathology. In this case, chickenpox.

If a person is re-infected with viruses, the cells kill them, so the disease does not develop. Such memory should last a lifetime, but sometimes the work of the immune system is disrupted. In this case, a person is able to re-infect a disease. This is especially true in:

• Those people who suffer from immunodeficiency;
• Who underwent organ transplantation, while immunity usually noticeably decreases;
• Who survived a lot of stress.

Vaccination

There is a special scheme for vaccinating children, which should be followed to ensure that the child is healthy. But at birth he already has immunity to certain diseases, since antibodies were transmitted to him from his mother. Such immunity persists for a short time, has a temporary nature.

Vaccination is a special vaccine that creates artificial immunity. Apply in this case, harmless antigens - part of the microorganism, which provokes pathology. That's why some people do not get sick twice. He has lifelong immunity.

Measles vaccine

Measles is a very contagious disease. If a person contacts a patient, the likelihood that he will get sick is 98%. This will happen, of course, if he has not developed immunity to measles. It can be created artificially, vaccination is done for this. The vaccine is prepared from live measles viruses, which are already slightly weakened. Enter it under the skin in the area of the shoulder or shoulder blade.

There are mandatory rules that state that every child who is sent to a kindergarten must undergo such vaccination according to a certain plan.

Vaccine against chickenpox

Chickenpox is chicken pox. To protect a person from getting infected with this pathology, vaccination is also carried out. It is very similar to the measles vaccine. In this case, the chickenpox virus is used in a weakened form. Doctors recommend that such vaccinations be given to all children aged 12 months. After some time, a child who has not yet had chickenpox must undergo a second procedure. It should be conducted at the age of 4 to 6 years.

When such a vaccine is introduced about the body, the immune system begins to react . Subsequently, the virus is destroyed, but also proteins that are able to fight the virus in the future are produced. These are antibodies that do not disappear from the body, creating protection against the disease. Thus, a person has immunity to chickenpox.

Because of this, doctors strongly recommend that children undergo similar procedures two times. But adults who were not affected by this virus and did not do the vaccination should also receive 2 doses in order to develop immunity.

Sometimes a child may have a reaction to a vaccine. This happens in cases when he has experienced other serious illnesses. Therefore, you should consult a doctor beforehand.

Very rarely a person can still become infected with such a disease if he has been vaccinated. Even more rare are cases when the infection occurred a second time. But most often the pathology does not appear with such obvious symptoms. In medicine, this phenomenon is called "breakthrough infection." But in most cases, such a person does not get sick twice.