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Image used for representational purpose only BENGALURU: The existing Covid-19 vaccines are effective for a minimum one year as per the available evidence and if more troubling variants don’t emerge, the protection may last for a couple of years, virologist Dr V Ravi said on Saturday. He is a member of the state Covid task force committee. “Vaccinated persons would get protection for two to three years if there are no further variants of concern after one year,” he said during a webinar, ‘Covid – 3rd Wave, Vaccination and Protection’, organised by the Karnataka Women Journalists’ Association. Further research is required to determine the exact duration of vaccines’ effectiveness. Dr Ravi believes regular processing of a portion of Covid positive swab samples for genetic sequencing will help identify new coronavirus variants. The double mutant variants’ B. 1.617.1’ and ‘B.1.617.2’ have been found in 26 per cent of the 933 samples processed for genomic seque

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