– The effectiveness of vaccines for active strains, of course, has changed – it has become lower. Nevertheless, the vaccine still significantly reduces the likelihood of a severe course of the disease and death, says virologist Anatoly Altshtein.
Anatoly Altshtein — virologist, MD, chief researcher at the National Research Center for Epidemiology and Microbiology named following N. F. Gamaleiwhere the Sputnik V vaccine was developed.
Immunologist Nikolai Kryuchkov agrees with him: the effectiveness of the vaccine is declining. According to him, first of all, the effectiveness once morest infection drops sharply.