The GuardianCovid: new vaccines needed globally within a year, say scientistsMar 29, 2021bookmark_bordersharemore_vert
Al Jazeera EnglishScientists warn new COVID mutations in a year as vaccines stallMar 30, 2021bookmark_bordersharemore_vert
CNBCMutations could render current Covid vaccines ineffective in a year or less, epidemiologists warnMar 30, 2021Holly EllyattBy Holly Ellyattbookmark_bordersharemore_vert