"Ultra-mutant" corona virus brought under control in Russia Rospotrabendzor is monitoring the spread of the new version of COVID-19 PJ.2.1, which was detected in the United States and Europe. No cases of infection have been recorded in Russia yet. The strain has a large number of mutations and may be transmitted more quickly. Academician of the Russian Academy of Sciences Alexander Gintsburg called for testing the effectiveness of Sputnik V against a new version of the corona virus.