A third dose of coronavirus vaccine may be needed to prevent serious cases of new variants of the disease, Microsoft founder Bill Gates said, Report informs, referring to CBS News.
He made the comments amid the growing concern that current vaccines are less effective against the South African and Brazilian variants.
"The discussion now is do we just need to get a super high coverage of the current vaccine, or do we need a third dose that’s just the same or do we need a modified vaccine?" Gates said.
"All five of the companies that have US vaccines are looking at making that modification and adding that in so that people who’ve already had two shots might need to get a third shot. I think it’s reasonably likely that we will have a tuned vaccine just to make absolutely sure that as these variants hit the US that they’re not escaping from vaccine protection," he added.