Corona Alert: RT-PCR for passengers arriving in India on all international flights from China, Singapore, Hong Kong, South Korea, Thailand and Japan from January 1, 2023 Negative report of (RT PCR Test) will be mandatory. As per the instructions issued by the Government of India to the airlines, they should make amendments to allow boarding of only those international passengers traveling from these 5 countries with effect from January 1 2023, who have self-registered on the Air Suvidha portal. Declaration forms have been submitted.