Pfizer’s Covid efficacy against infection plunges to 20% after six months, data from Qatar shows
Pfizer’s Covid vaccine efficacy against infection plunges to just 20% after six months – but protection against severe illness barely dips, study concludes Pfizer’s protection against catching Covid drops to just 20% within six months Effectiveness against severe illness and death remains high for at least 6 months The study used data from Qatar, where… Read More »