"The only thing, apparently, will be the exception - this is, of course, in people with severe chronic diseases of the immune system," he told RIA Novosti.

According to Gunzburg, any vaccination is stress for the immune system and can trigger an exacerbation.

Such people must first consult with an immunologist, he stressed.

Earlier, Minister of Health Mikhail Murashko said that registration of the Russian vaccine from COVID-19 is expected in August.