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Shawn Case
Shawn Case
4 yrs

https://world-signals.com/news..../2022/04/08/second-b
#news #study #research #biden #usa #america #pfizer #covid #covid19 #vaccine #booster

Second booster shot extends protection for just a few weeks, study shows – World-Signals News
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world-signals.com

Second booster shot extends protection for just a few weeks, study shows – World-Signals News

A fourth shot of the Pfizer COVID-19 vaccine increased protection against viral infection for only four to seven weeks, according to a massive study published T
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