Pfizer Inc and BioNTech’s COVID-19 experimental vaccine 90% effective in initial trial results
In a significant development in a statement drugmaker Pfizer Inc said, its experimental COVID-19 vaccine has been effective more than 90%, as per initital trial results. The development marks a major victory in the war the Wuhan coronavirus-induced COVID19 pandemic which has killed more than a million people globally and has brought the growth of…









