OREANDA-NEWS. An antibody titer of 500 Bau / ml is large numbers, they can only be in vaccinated people, since this figure is usually less, infectious disease doctor, professor Nikolai Malyshev told RIA Novosti.

Earlier, a titer of antibodies to coronavirus of 500 Bau / ml (or 350 Bau / ml) may become conditionally sufficient in Russia to receive a QR code, Telegram channels reported citing a source in the Russian government.

"These are quite large numbers, I think that in any case, these people should be vaccinated, because the majority will have less," Malyshev commented on this information.

He noted that the question of how many antibodies will be enough to protect against coronavirus is a subject for discussion. "Therefore, it was decided that vaccination is 6 months after vaccination and after the transfer. This was done on the basis of studying a huge array of a large population group," added the infectious disease specialist.

Alexander Gorelov, deputy director for scientific work of the Central Research Institute of Epidemiology of Rospotrebnadzor, said that no vaccine guarantees 100% effectiveness against COVID-19 infection.

"No vaccine guarantees 100% effectiveness against infection, we must remember that the effectiveness of vaccines also varies, we say that there are so-called non-responders (people who did not develop antibodies after vaccination) to the vaccine, their 3-5% and this should be remembered, "Gorelov said at the online meeting of the Scientific Council of the Russian Academy of Sciences" Life Sciences "on the topic:" Vaccines and new treatments for COVID-19: problems and prospects. "