India on Thursday recorded five new cases of the UK Covid-19 strain taking the tally of the highly infectious strain to 25. Six cases were first reported on Tuesday and 14 more emerged on Wednesday. All the patients have returned from the UK recently. The dangerous and fast-spreading strain of Covid-19 was first detected in the UK last month. Authorities have been testing all those arriving from UK for past few days at airports and their samples were analysed at special labs for the new strain. The new strain is believed to be 70 per cent more infectious.