At least 43 medical students of a medical college in Telangana have tested positive for COVID-19, prompting the authorities to shut down the campus.

The Chalmeda Anand Rao Institute of Medical Sciences at Bommakal in Karimnagar district had held its annual day festival about a week ago and the event is suspected to have triggered the outbreak.

Karimnagar district medical officer Dr Juveria said the government had not been informed about the intention to conduct a physical gathering of so many people for the annual day event. Many were reportedly not wearing masks during the function.

"So far 200 people have been tested. On Monday, there will be a special camp to test all 1,000 people on the campus,'' Dr Juveira said.

Reports say 13 students tested positive on Saturday while another 26 tested positive on Sunday.

Samples of 13 passengers who came to Hyderabad from abroad and tested positive have been sent for genome sequencing and results are expected by today.

As many as 979 passengers had arrived from 11 'at-risk' countries and even those who tested negative have been asked to stay under home quarantine for 14 days and get tested on the 8th day after arrival.