FDA authorizes Covid-19 booster shots retooled to tackle Omicron subvariants

Vaccines produced by Moderna and Pfizer/BioNTech approved as US prepares for vaccination campaign in fall

The US Food and Drug Administration on Wednesday authorized retooled Covid-19 booster shots made by both Moderna and Pfizer/BioNTech to target the currently dominant BA.4/BA.5 Omicron subvariants of the coronavirus.

Both vaccines also include the original version of the virus targeted by all previous Covid shots as the US prepares for another vaccination campaign in the fall.