Two new Omicron COVID subvariants BA.4 and BA.5 being analyzed by WHO
Only a few dozen cases of BA.4 and BA.5 have been reported to the global GISAID database, according to WHO Authors: Jennifer Rigby Reuters April 11, 2022 The World Health Organization said on Monday it is tracking a few dozen cases of two new sub-variants of the highly transmissible Omicron strain of the coronavirus to […]