Gunzburg: the level of 500 neutralizing antibody units is ideal for protection against COVID-19 
The head of the Gamalea Center Alexander Gunzburg revealed the level of antibodies, sufficient to protect against coronavirus. He told about this in an interview with Izvestia.
Gunzburg noted that, according to a study by the Gamaleya Center, conducted jointly with the Moscow Department of Health, 300 antibodies in international units fully protect against the delta strain COVID-19. According to him, if a person has less, then he should be vaccinated with Sputnik Light. The head of the center also added that if after vaccination with “Light” the patient has only 350-400 antibodies, then it is worth being vaccinated with the second component of “Sputnik V”. “If you have 500 units or more, then this is ideal for protection against infection with COVID-19,” he summed up.
It is noted that recently the World Health Organization (WHO) introduced the term “neutralizing units of antibodies” ( banding antibody units) to simplify the process of determining the amount of antibodies in a person. Each company that produces its own system for calculating them will be obliged to introduce a method for converting to WHO units.
“And now we need to compare by international units, and not by titles, as we once did, and not according to the positivity coefficient, “Gintsburg explained.
Earlier, Alexei Agranovsky, professor of the Department of Virology, Faculty of Biology, Moscow State University, admitted that a strain of coronavirus may appear in Russia, which will have the ability to escape from existing vaccines. The virologist noted that a new variant could arise in any country where there are many cases of COVID-19 infection. He stressed that it is very difficult to predict the properties of such a strain. For example, it can be a strain that is leaving vaccines, the expert explained. At the same time, Agranovsky noted that the delta strain of the virus still dominates, which creates an obstacle to the emergence of new variants.