CNN (4/30, Tirrell) reported that HHS “said it will require that all new vaccines be tested in placebo-controlled trials before they’re licensed for use, raising urgent questions about the system used to clear updated Covid-19 boosters each respiratory virus season.” The FDA usually selects strains for updated COVID-19 vaccines in June so they can be ready by the fall. Experts fear that “requiring placebo-controlled trials before clearing new versions – which could involve enrolling participants, giving some the vaccine and some a placebo shot, and waiting some period of time to assess safety and efficacy – would delay availability of updated Covid shots by months, putting vulnerable people at risk.” NBC News (5/1, Lovelace Jr.) reports the FDA’s vaccine advisory committee is “expected to meet in May or June to make a recommendation on which strains should be included in the next round of shots.” If the agency “deems Pfizer’s and Moderna’s updated vaccines ‘new’ products, requiring fresh trials, it’s extremely unlikely the doses would be ready for the fall, experts said.” The Hill (5/1, O'Connell-Domenech) reports HHS indicated “in its release that none of the vaccines on the Centers for Disease Control and Prevention’s childhood recommended schedule were tested against an inert placebo, but health experts say this is false.”