Pfizer’s COVID-19 Vaccine Is 90% Effective
The American pharmaceutical company Pfizer announced on Monday that its coronavirus vaccine is effective in 90% of cases . Pfizer laboratories reached this conclusion by observing the results of the first phase 3 trial, prior to requesting its approval and permits to go to market. The specialists warned that patients achieve 90% protection against SARS-CoV-2 seven days after having … Read more
