Epidemiologist Gunzburg: the nasal vaccine will be tested on those vaccinated by Sputnik V 
Studies of the nasal vaccine against COVID-19 will be carried out on different categories of people. They were named by the director of the Gamaleya National Research Center for Epidemiology and Microbiology Alexander Gintsburg, he is quoted by RIA Novosti.
“There are different options for the study design. As part of the study, it is planned to vaccinate with a nasal vaccine both those who have previously been vaccinated with Sputnik V and those who do not have antibodies, ”said Gunzburg.
Earlier, Russian President Vladimir Putin tested a nasal vaccine from coronavirus the day after revaccination with Sputnik Light. He explained that his protective antibody titers dropped exactly six months later.
According to the head of state, during the vaccination, the doctors took powder into a syringe and injected it into both nostrils. Putin admitted that he felt nothing at the time of vaccination and was soon able to play sports.
The Russian Ministry of Health allowed the Gamaleya Center to conduct the second phase of clinical trials of a coronavirus vaccine in the form of a nasal spray in October. According to Alexander Gintsburg, this vaccine will not cancel the need for routine vaccinations. The nasal drug complements it, creating another barrier to the coronavirus.