The 63-year-old man made contact with the group as they came to the Nhu Nguyet 2 hotel in the northern Yen Bai Province on April 18. He has been quarantined since.

After testing positive for the coronavirus on Monday, he was transferred to the National Hospital for Tropical Diseases in Hanoi. After confirmation tests, the Health Ministry recorded him as a Covid-19 patient Tuesday evening, raising Vietnam's infection tally to 2,857.

Among the group of 11 Indian experts who came to the hotel, four had been confirmed as Covid-19 cases earlier.

Vietnam has not recorded any new Covid-19 community transmission for more than a month.

India has seen a recent surge of coronavirus cases that has put immense pressure on its healthcare system. On Sunday, Prime Minister Narendra Modi admitted the "storm" of infections had shaken India as the country set a new global record of the most number of Covid-19 infections in a day. The number of cases in India surged by 349,691 in the past 24 hours, the fourth straight day of record peaks, Reuters reported.

Hospitals in Delhi and across the country are turning away patients after running out of medical oxygen and beds. As of Tuesday, the country of 1.3 billion people has recorded more than 17.8 million infections and 199,388 coronavirus deaths, after 1,508 more died overnight.