New Delhi: The Centre on Thursday said that two per cent of passengers arriving on each international flight will be subject to random coronavirus tests from 24 December, as it issued revised guidelines for international travellers amid a rise in cases in China, US, South Korea and other countries. The Union health ministry has written to the civil aviation ministry in this regard amid an increase in coronavirus cases in many countries. Here are the revised guidelines: Such travellers in each flight shall be identified by the concerned airlines (preferably from different countries), the letter said, adding that after submitting the sample passengers shall be allowed to leave the airport” Union health secretary Rajesh Bhushan said. Following random testing, if anybody is found COVID-positive, the sample should be sent for genomic testing at the designated INSACOG laboratory network, Bhushan wrote in a letter to his civil aviation ministry counterpart, Rajiv Bansal. A copy of the ...