March 16, 2023
CIDRAP (March 16)
COVID Vaccine Efficacy Against BA.4/5 Hospital Stay Fell From 68% To 36% After 4 Months
Vaccine effectiveness (VE) of three doses of the monovalent (single-strain) mRNA COVID-19 against hospitalization amid Omicron BA.4 and BA.5 subvariant predominance was 68% for up to 4 months but then fell to 36%, estimates a study published yesterday in JAMA Network Open.
FDA Planning Next Steps On COVID-19 Vaccines.
Axios (3/13, Cirruzzo) reports as “federal officials are considering a plan to do yearly one-dose boosters,” the Food and Drug Administration has scheduled a June meeting to decide which COVID-19 strains the next booster should target. Additionally, the FDA’s plan could include making higher-risk segments of the population eligible for two annual boosters.