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Search WHO plans to ‘mix and match’ doses to boost strength Health & Science - By Graham Kajilwa and Anyango Otieno | February 12th 2021 at 12:00:00 GMT +0300 The World Health Organisation (WHO) is considering a mix-and-match of different vaccines as a solution to jabs that are not as effective to certain populations or strains of Covid-19. This comes in the wake of doubts raised over AstraZeneca vaccine, which was found not to be effective to the B.1.351 variant of the virus. The WHO, while giving AstraZeneca the greenlight to be used for persons above the age of 65, said for this vaccine there was no need for a combination.

South africaAhmed ogwellVaccine allianceWorld health organisationDeputy director africaWho covid 19 astrazenecaதடுப்பூசி கூட்டணிஉலகம் ஆரோக்கியம் ஆர்கநைஸேஶந்