A Vietnamese government statement said the evacuations of 80,000 people, mostly local tourists, will take at least four days.
Vietnam on Saturday reported its first locally transmitted cases since April, putting the government on high alert.
In Australia, authorities in the southeastern state of Victoria reported a record 532 new cases Monday and warned a lockdown there could be extended beyond its original six-week timeline.
Spain is safe for tourists, it said Sunday, rebuking Britain for imposing a two-week quarantine on all travelers entering the country from Spain because of the coronavirus pandemic.
“Spain is safe, it is safe for Spaniards, it is safe for tourists,” Foreign Minister Arancha Gonzalez Laya told reporters.