WASHINGTON — Researchers studying next-generation vaccines to fight an evolving Covid-19 threat are running into problems getting existing vaccines to use in their research.
To be eligible, you’ll need to have completed your primary vaccination series — and be at least two months out from your last dose of any Covid vaccine, according to the CDC. The agency’s advisors also say that if you’ve recently had Covid, you should consider waiting three months after testing negative before getting your updated booster.
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