https://www.businesstoday.in/sectors/pharma/pfizer-90-effective-covid-vaccine-leaves-volunteers-with-severe-hangover-aches/story/421946.htmlPfizer had earlier claimed 90% efficacy of the drug after analyzing data from phase III clinical trials.
Volunteers testing Pfizer’s new Covid-19 vaccine are complaining of 'severe' hangover and aches after their first shot
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