strain

MUMBAI: The emergence of the Omicron strain could lead drug companies scrambling to the drawing board to tweak their Covid-19 vaccine plans. US firm Novavax and Russia’s Gamaleya Institute said on Monday that they had initiated work on…

ISLAMABAD: Pakistan on Tuesday reported its first confirmed cases of the new coronavirus variant found in the UK after it identified the strain in three samples taken from passengers who had returned from Britain. Citing the Sindh health…