The new case brought the national tally of COVID-19 to 1,513.
The new patient arrived at Van Don airport in the northern province of Quang Ninh on December 29 and was immediately put into quarantine in Hai Duong province.
The number of recovered patients reached 1,361 after four were given the all-clear on January 9. The fatalities remain at 35.
Among patients under treatment, nine have tested negative for SARS-CoV-2 once, eight twice and eight thrice.
A total of 17,634 people who had close contact with COVID-19 patients or arrived from pandemic-affected regions are staying in quarantine nationwide.
