Radostina Alexandrova

"The virus is quite active. Not only did Omicron appear, but there are sub-variants. These are BA.1 - the classic Omicron, BA.2 and BA.3. Probably all three occurred at the same time. It is noteworthy that BA.2 is less well known, but it also has some advantages because it is much easier to spread.

The virus continues to change, the new variant attracts attention with its large number of mutations - over 32, for comparison the Delta variant has only 16. It is located in the spike, it can run away from the immune response, neutralizing antibodies are directed against the spike. This should not cause panic. This was stated in "The Day Begins" by Prof.

To build up a collective defense against coronavirus, about 80% of Bulgarians must acquire immunity. This became clear from the comment of the virologist Prof. Radostina Alexandrova on bTV.

Just because we already have vaccines doesn't automatically mean we can go back to our previous way of life. We still don't know how long the effect of the vaccine will last. We need more time to find answers to these questions, and we must not put health at risk. This was stated to the Bulgarian National Radio by Prof.

A few days ago, one of the most respected publications in the science - "Nature", dedicated one of his articles to coronavirus vaccines and found that there are 78 confirmed active projects, 73 are currently at exploratory or preclinical stages and 5 of them are in the first phase of clinical trials, Prof.