BA.4, BA.5 subvariants causing COVID spike in West Bengal: Experts
"We have been conducting genome sequencing on positive samples in West Bengal. A few subvariants of Omicron, mostly the BA.4 and BA.5 was found. But there is nothing to worry about. The BA.5 subvariant though highly infectious is not that threatening, at least for those who have no comorbidities," Siddhartha Niyogi, director of health services said.
US FDA wants COVID boosters targeting Omicron BA.4, BA.5 subvariants
The U.S. Food and Drug Administration on Thursday recommended COVID-19 vaccine manufacturers change the design of their booster shots beginning this fall to include components tailored to combat the currently dominant Omicron BA.4 and BA.5 subvariants of the coronavirus.
U.S. FDA backs COVID-19 booster shots tailored to target Omicron BA.4, BA.5 subvariants - National
The BA.4 and BA.5 Omicron COVID-19 subvariants are now dominant in the United States, according to data from the Cenetrs for Disease Control and Prevention.
Tweaked COVID boosters in US must target newer omicron types
U.S. regulators told COVID-19 vaccine makers Thursday that any booster shots tweaked for the fall will have to add protection against the newest omicron relatives. The Food and Drug Administration said the original vaccines would be used for anyone still getting their first series of shots.