Stressing on the need to protect both lives and livelihoods, he said public health action in India and across the world must be continually guided by evidence from four key questions -- how transmissible is the variant, severity of the disease it causes, how well vaccines and prior SARS-CoV-2 infection protect and how common people perceive risk and follow control measures.
A number of European countries have banned flights from the UK as the British government warned that the potent new strain of the virus was "out of control" and imposed a stringent new stay-at-home lockdown from Sunday.
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