Vietnam’s Ministry of Health reported four new cases of COVID-19 on Tuesday, all detected in quarantine.
Two of the new patients are Indian experts while the others are Vietnamese returnees from the Czech Republic, the health ministry elaborated.
The two Vietnamese arrived in the Mekong Delta city of Can Tho on board flight QH9062 on Sunday.
They were quarantined in Vinh Long Province, about 40km southwest of Can Tho, upon arrival.
Both tested positive for COVID-19 on Monday and are now being isolated for treatment in Vinh Long.
The remaining two cases touched down in Hanoi from India aboard flight 6E8679 on November 20.
The two were sent to quarantine upon entry.
They are treated in Hanoi after their tests returned positive on Monday.
Vietnam has logged 1,316 coronavirus cases as of Tuesday night, with 1,153 recoveries and 35 virus-related deaths, the Ministry of Health said.
Minister of Health Nguyen Thanh Long on Tuesday warned of high risks of a resurgence of the virus in Vietnam even though the country has gone 83 days without any infection in the community.
The Southeast Asian country began denying entry to foreign nationals on March 22 but the government allows foreign experts, skilled workers, investors, and diplomats to enter the country on a case-by-case basis, subject to mandatory quarantine.
Though international commercial flights are now suspended, charter planes to the country have been arranged to bring in experts, skilled workers, and diplomats, and to repatriate Vietnamese citizens stranded in other nations and territories due to the pandemic.
Vietnam currently charges international arrivals for quarantine.
It provided the quarantine service for free in the past.