Pfizer Covid-19 vaccine ‘90% effective in preventing the disease’
Pfizer Covid-19 vaccine ‘90% effective in preventing the disease’

Pharmaceutical giant Pfizer and biotech firm BioNTech have said theircoronavirus vaccine was more than 90% effective in preventing Covid-19 amongthose without evidence of prior infection.

The results are based on the firstinterim analysis of Phase 3 of the study, and evaluated 94 confirmed cases ofCovid-19 in trial participants.