In Decision No. 3638/QD-BYT dated July 30, 2021 on promulgating the “Interim Guidance on Surveillance and Prevention of COVID-19”, the Ministry of Health has recently announced specific instructions on the new classification of F0 (COVID-19 patients) , F1 (close contacts of F0) and F2 (close contacts of F1) cases.

Designing  by THANH HUYEN - Translating by T.VY