Pfizer COVID-19 vaccine 99% effective in trials in South Africa
Pfizer and BioNTech also announced 100 percent efficacy for COVID-19 in South Africa, where variant B.1.351 is predominant. The data also confirmed the effectiveness in preventing severe forms of the disease, which has no doubt killed many millions. According to the US Centers for Disease Control, the vaccination is also 100% effective in preventing severe […] More