Koronawirus. W Elblągu i w powiecie elbląskim zmarło 6 osób

@grzesion - piszą tam m. in. "Pfizer claim that their Covid-19 mRNA injection has a vaccine effectiveness of 95%. They were able to claim this because of a simple calculation (full details of which can be viewed here)performed on the number of infections confirmed amongst the vaccinated group and the not-vaccinated group during the earliest stages of the still ongoing clinical trials"

don_orleone