MOSCOW, Nov 21 - PRIME. Despite the fact that re-infection with coronavirus is practically excluded, individual episodes were still recorded, the immunologist-allergist Vladimir Bolibok told Vechernyaya Moskva.
According to him, most people who have had coronavirus have immunity for a long time. In December 2019, the first patients appeared in Wuhan, and their immunity has been preserved to this day.
Again, Bolibok specified, people fell ill in the case of serious illnesses that worsen the functioning of the immune system, with oncology, taking immunosuppressants - but these are drops in the sea, constituting a fraction of a percent of the total number of those who have recovered.
At the same time, the question remains open - can a person with immunity become an asymptomatic carrier? According to Bolibok, such a situation is quite possible - immunity will not give a person to get sick, but for some short period he may become an asymptomatic carrier. A patient who has already had a coronavirus will not be harmed. On the contrary, repeated contacts will maintain his post-infectious immunity.
It is also possible that the coronavirus can mutate, and then the protective antibodies already developed during the illness will not help. But then it will be a completely different disease, the doctor said.
"On the coronavirus itself there is an S-protein. It is he who determines the severity of the course of the disease, it is on him that scientists are guided when developing a vaccine. If a mutation suddenly occurs, SARS-CoV-2 will lose this protein, then, of course, vaccinations will not work, but the virus will stop attacking the way it is attacking now. It will be a new strain with new clinical manifestations. A new coronavirus infection, "Bolibok said.
Thus, according to him, there is no need to be afraid of re-infection if a person does not have other health problems - on the contrary, contact with the virus after an illness to some extent will even improve immunity.