omicron BA.5

The new booster shot would be an update to Pfizer's current version of the shot, which was designed for the original strain of the coronavirus.

Health & Safety

Pfizer asks FDA to greenlight new omicron booster shots, which could arrive this fall

1:33pm August 22, 2022

Pfizer has submitted data on its bivalent COVID-19 booster shot that specifically targets the latest omicron subvariants. If authorized, the company says the shots could be ready as soon as September.

A Covid-19 testing site stands on a Brooklyn street corner in April.

Science
Health & Safety

A new dominant omicron strain in the U.S. is driving up cases — and reinfections

7:39pm July 11, 2022

by Allison Aubrey

BA.5 is now the dominant omicron strain in the U.S. It's good at evading the immune system, though doesn't appear to cause more serious illness.

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