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Pfizer opens study of COVID shots updated to match omicron

4 monthes ago   |   By Chicago Tribune

Pfizer has begun a study comparing its original COVID-19 vaccine with doses specially tweaked to match the omicron variant
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Pfizer opens study of COVID shots updated to match omicron

Pfizer opens study of COVID shots updated to match omicron

4 monthes ago   |   By WGN TV

Pfizer has begun a study comparing its original COVID-19 vaccine with doses specially tweaked to match the hugely contagious omicron variant.
Pfizer and its partner BioNTech announced the study on Tuesday.
COVID-19 vaccine makers have been updating their shots to better match omicron in case global health authorities decide the change is needed.
While omicron is more likely than previous variants to cause infection even in people who've been vaccinated, it's not yet clear that a change to the vaccine recipe is needed.
The original vaccines still offer good protection against severe illness...
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