Vietnam's Ministry of Health issued an announcement on Sunday that all passengers coming from or through China, South Korea, the UK and Schengen countries will be compulsorily quarantined and tested for coronavirus.
"The compulsory quarantine applies to arrivals from March 14," the health ministry said in a statement. "Those whose tests are positive will get immediate treatment while the rest will be quarantined for 14 days."
In a separate statement not related to travelers, the Ministry of Health said that everyone, including foreigners, were required to wear face masks in public places.
In response to 37 new coronavirus cases reported over the last week, the government is shuttering businesses in major areas across the country and has said that schools will remain closed for an indefinite period.
From Saturday evening, bars, cinemas, clubs, karaoke shops, massage parlors and online game centers have been closed in Hanoi, Ho Chi Minh City, Da Nang and other cities and are requiring them to close until the end of March.
Vietnam has been relatively COVID-19 free, but the country reported 41 new coronavirus cases over the past week, bring its total to 57 cases.
The dramatic increase in numbers is rising with a spate of new infections was traced to a flight from Britain.
In order to limit the spread of coronavirus in the country, Vietnam has denied entry and stopped issuing tourist visas to citizens from Europe's Schengen visa-free area and Britain starting on March 15th, Sunday.