The UK Health Security Agency said B.1.1.529 has a...
variant of concern
It was first found in Colombia in January 2021,...
Infections of the mu variant (B.1.621) have been reported...
The B.1.617 variant's global spread has prompted alarm and...
India currently accounts for one in three of the...
The seven-day average of new cases is at a...
There is a third level, the highest – 'variant...
