Vietnam has ordered the evacuation of 80,000 people from the coastal city of Danang after three residents there tested positive for coronavirus.
The government said the evacuation would take four days and involve flights chartered to 11 different Vietnamese cities.
Vietnam, which has been praised for its pandemic response after reporting just 400 cases and no deaths, went back on high alert at the weekend as it confirmed its first local infections since April, all in the popular tourism destination of Danang.
An aggressive and widespread testing regime, plus a strict quarantine had helped the southeast Asian country almost eradicate Covid-19 within its borders, but the authorities are now grappling with its first internal infections for months.
Although foreign tourists are still barred from entering the nation, there has been a surge of domestic travel as the Vietnamese take advantage of discounted flights and hotel deals.