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.
These mucosal vaccines target thin mucous membranes that line the nose, mouth and lungs. By prompting immune responses where SARS-CoV-2 first enters the body, mucosal vaccines could, in theory, prevent even mild cases of illness and block transmission to other people — something COVID-19 shots have been unable to do. Vaccines that produce sterilizing immunity would be game changing for the pandemic. ...
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.
The additional doses will be available for delivery before the end of the year, while shots that were purchased earlier are currently being distributed, the EU Commission said.
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