Why do some people not get sick twice? All due to the fact that he develops immunity to a specific disease. There are few such ailments. To protect the body from infection, vaccination is done.
List of diseases that do not appear twice
There are such pathologies that a person suffers from only once in a lifetime:
- black pox;
- mumps;
- rubella;
- windmill;
- measles;
- encephalitis and others.
How to protect yourself from such diseases?
Many are concerned about why a person does not get sick twice with some diseases, whether it is possible to protect oneself from being infected by them. Doctors distinguish several rules. If you stick to them, it is believed that the risk of contracting diseases is reduced. Among them are the following:
- It is required to ventilate the bedroom, as a person needs to breathe fresh air.
- You need to wash your hands, especially after coughing, transport, toilet.
- Must practicesports.
- Vaccination required. It acts as a prevention against infection.
- You need to strengthen the immune system, take vitamins, eat right.
- See a doctor promptly if condition worsens.
The appearance of immunity after an illness
To the question of why a person does not get sick twice with certain diseases, there is a simple answer: after suffering a pathology, immunity is produced in the body. The microorganism that provokes the disease has a unique antigen. Antibodies tend to recognize it. When cells first encounter microbes, they detect antigens and then develop antibodies against them.
Therefore, in the case of infection with a virus, for example, chickenpox, the body begins to produce antibodies that can fight microbes. Subsequently, some antibodies will disappear, but they will leave a memory in the cells, which will provide a person with immunity to pathology for life. In this case, chickenpox.
If a person is re-infected with viruses, the cells kill them, so the disease does not develop. Such a memory should be preserved for life, but sometimes the immune system is disrupted. In this case, a person is able to re-infect the disease. This is especially common in:
- those people who suffer from immunodeficiency;
- who have undergone organ transplants, while immunity is usually markedly reduced;
- under severe stress.
Vaccination
There is a speci althe vaccination schedule for children to follow to keep the child he althy. But at birth, he already has immunity to certain diseases, since the antibodies were transmitted to him from his mother. Such immunity does not last long, it is temporary.
Vaccination is a special vaccination that creates artificial immunity. In this case, harmless antigens are used - part of the microorganism that provokes pathology. That is why a person does not get sick twice with some diseases. It develops lifelong immunity.
Measles vaccine
Measles is a highly contagious disease. If a person is in contact with a sick person, the probability that he will get sick is 98%. This will happen, of course, if he has not developed immunity to measles. You can create it artificially, for this they do vaccination. The vaccine is prepared from live measles viruses that have already weakened slightly. It is injected 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 kindergarten must receive such vaccinations according to a specific plan.
Chickenpox vaccine
Chickenpox is chicken pox. To protect a person from infection 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 a similar vaccination for all children at the age of 12 months. After some time, a child who hasn't been sick yetchickenpox, must undergo a second procedure. It must be performed between the ages of 4 and 6.
When such a vaccine is introduced into the body, the immune system starts to react. Subsequently, the virus is destroyed, but proteins are also produced that can fight the virus in the future. These are antibodies that do not disappear from the body, creating protection against the disease. Thus, a person becomes immune to chickenpox.
Because of this, doctors strongly recommend that children undergo such procedures twice. However, adults who have not been affected by the virus and have not been vaccinated should also receive 2 doses to develop immunity.
Sometimes a child may have a reaction to a vaccine. This happens in cases where he has experienced other serious illnesses. Therefore, you should first consult a doctor.
Very rarely a person is still able to contract such a disease if he has been vaccinated. Even less often there are cases when the infection occurred a second time. But most often, the pathology manifests itself no longer with such obvious symptoms. In medicine, this phenomenon is called "breakthrough infection." But in most cases, a person does not get sick twice with such diseases.
