Updated On: 16 April, 2021 12:00 AM IST | Washington | IANS
Pfizer said earlier this month that its Covid-19 vaccine was more than 91 per cent effective at protecting against the coronavirus, and more than 95 per cent effective against severe disease up to six months after the second dose.

Photo used for representational purpose. Pic/AFP
Pfizer Chief Executive Officer Albert Bourla said people will likely need a third dose of the Pfizer/BioNTech Covid-19 vaccine within 12 months of getting fully inoculated.
Bourla told CNBC News on Thursday that it is possible people will need to get vaccinated against the coronavirus annually, reports Xinhua news agency.