US asks pharma companies to target BA.4 and BA.5 to make covid boosters

Thu, 2022-06-30 19:05

WASHINGTON: The US Food and Drug Administration told vaccine manufacturers on Thursday that COVID boosters for this fall and winter should include components targeting the BA.4 and BA.5 sub-lineages of Omicron.
Earlier this week, a panel of medical experts convened by the agency voted in favor of updating the Covid vaccines against Omicron, with a majority indicating they would favor shots that match its original form, BA. Let’s target the latest iterations instead of .1, fearing the latter. very old.

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