New Delhi: At least 20 passengers from the UK tested positive for COVID-19 on Tuesday as the government issued a stringent set of SOPs mandating RT-PCR tests at airports for each traveller from the country and isolation in a separate unit of an institutional facility for positive cases in view of the new coronavirus strain.There is no need to panic but there is cause to be more vigilant, said NITI Aayog member (Health) Dr V K Paul."We are yet to spot such a virus in our country… We will be safe if we suppress the genomic sequence," Paul said at a press conference while stressing that the mutated SARS-CoV-2 strain detected in the UK has no impact on the potential of emerging vaccines.Ahead of the December 23-31 suspension of flights to and.