Fully vaccinated F1 cases only need five-day quarantine, one COVID tes… stockbot 0 31 2022.02.22 15:58 http://vietnamnews.vn/society/1156966/fully-vaccinated-f1-cases-only-n… + 6 https://vietnamnews.vn/rss/society.rss + 6 People who have been in close contact with COVID-19 patients, or F1 cases, are allowed to self-quarantine at home for five days if they have been fully vaccinated, or have recovered from the disease in the last three months.