Omicron and delta variants of COVID-19 have researchers investigating the effectiveness of existing vaccinations and boosters against emergi...

Study: Nasal vaccine may help protect against COVID variants

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Omicron and delta variants of COVID-19 have researchers investigating the effectiveness of existing vaccinations and boosters against emerging new strains of SARS-CoV-2.

from Fox News https://ift.tt/31SFfQD


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