Agencies
Washington, November 09:
US pharmaceutical giant Pfizer and German biotech firm BioNTech said their coronavirus vaccine was more than 90% effective in preventing COVID19 among those without evidence of prior infection.
Agencies
Washington, November 09:
US pharmaceutical giant Pfizer and German biotech firm BioNTech said their coronavirus vaccine was more than 90% effective in preventing COVID19 among those without evidence of prior infection.