Another booster needed? How many shots is enough? Pfizer CEO now says a FOURTH Covid vaccine dose may be needed sooner than expected due to omicron. Read more here:
Pfizer Boss says you may need a FOURTH vax. Does this ever end?
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Another booster needed? How many shots is enough? Pfizer CEO now says a FOURTH Covid vaccine dose may be needed sooner than expected due to omicron. Read more here: