UN: COVID-19 herd immunity unlikely in 2021 despite vaccines

  • FILE - In this file photo dated Monday, June 22, 2020, a sign requesting people stay two metres apart to try to reduce the spread of COVID-19 is displayed in front of “Out of Order” a 1989 red phone box sculpture by British artist David Mach, in London. The World Health Organization’s chief scientist warned that even as numerous countries start rolling out vaccination programs to stop COVID-19, that there will be no chance of herd immunity this year. At a press briefing on Monday, Jan. 11, 2021, Dr. Soumya Swaminathan said it was critical countries and their populations maintain strict social distancing and other outbreak control measures for the foreseeable future. (AP Photo/Matt Dunham, File)

GENEVA — The World Health Organization’s chief scientist warned that even as numerous countries start rolling out vaccination programs to stop COVID-19, herd immunity is highly unlikely this year.

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