Government advisers are debating who should get updated COVID-19 boosters and when. The tweaked shots made by Pfizer and rival Moderna promise Americans a chance at their most up-to-date protection ahead of an expected winter surge because they target the omicron strains now circulating. But it’s not clear just how much more protection they’ll get. Another key question: How long people should wait after their last shot to get the most benefit from a new one. The Centers for Disease Control and Prevention will issue recommendations soon, the last step before updated boosters can roll out.
The new updated shots are only for use as a booster for people who've had primary vaccinations regardless of brand or how many booster doses they've had until now. Pfizer's option is for people 12 and older while Moderna's is for adults only.
The new combination booster “should provide at least similar or better protection against omicron since it’ll be a better match” to today's virus strains, she told the panel.
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