The decision came after a three-month-old girl contracted the virus from her grandmother, becoming the 10th Covid-19 patient in Vinh Phuc province and the 7th infection case in Binh Xuyen district.
All the district's residents shall not be allowed to leave the region for the next 20 days.
The number of infection cases tends to rise in Son Loi commune, the officials said.
ILKHA