Pfizer says its COVID-19 vaccine may be 90% effective
NEW YORK - Pfizer and biotechnology company Biontech says their coronavirus vaccine may be 90% effective at preventing COVID-19, according to early data. Pfizer said the vaccine ca…
NEW YORK - Pfizer and biotechnology company Biontech says their coronavirus vaccine may be 90% effective at preventing COVID-19, according to early data. Pfizer said the vaccine ca…