On January 27, the Ministry of Health of Vietnam received information that a Vietnamese female worker determined to be positive for COVID-19 when entering Japan, was identified by the Japanese health authority. new strain of England. On the morning of January 28, the Vietnamese Ministry of Health announced patient 1552 in Hai Duong had contact with this person, as well as alarmed about the possibility of new transmission. Also in the morning of January 28, patient 1553 was also confirmed to infect the community in Quang Ninh. Immediately, the two above provinces were raised to the alarm level, Hai Duong had a social gap from 12 noon after 72 cases of community infection,  ended 55 days of community infection in Vietnam.  From 6pm on January 27 to 18:00 on January 28, 91 newly discovered cases  had an epidemiological factor involving female workers entering Japan and 2 patients 1552, 1553. This case occurred in Hai Duong, Quang Ninh, Bac Ninh, Hai Phong and Hanoi, recorded within 24 hours with the most number of cases detected since the outbreak of COVID-19 appeared in Vietnam. As of January 31, for a total of 4 days from January 28 to 31, the Ministry of Health recorded 238 cases of community infections, in 9 provinces including Hai Duong (188), Quang Ninh (25), Hanoi (13), Gia Lai (4), Bac Ninh (3), Hoa Binh (2), Ho Chi Minh City, Hai Phong, Binh Duong, one shift each. Particularly, on January 30, there were 61 cases of infection; 31 cases were recorded on January 31.  Two cases were in Hoa Binh, one was the Standing Deputy Secretary of the Tan Lac District Party Committee (Hoa Binh) , the other was an officer of the People's Committee of Tan Lac district.   On February 1, a total of 33 new cases, of which 1 case was imported.   On February 2, there were a total of 32 new cases, of which 1 case was imported.   On February 6, a loading monitor at Tan Son Nhat airport was announced as the 1979 patient, who is not believed to be the source of the epidemic in HCMC. From this case to February 10, at least three infection chains were found and another 18 cases were evaluated by Deputy Minister of Health Nguyen Truong Son as a "unexpected situation" due to the unknown path of infection. 38] In this context, from 12 o'clock on 9 February, HCMC requested to stop non-essential services.  From January 28 to February 16, the Ministry of Health recorded 679 community infections, in 13 provinces including Hai Duong (501), Quang Ninh (59), Ho Chi Minh City (36), Hanoi (34) , Gia Lai (27), Binh Duong (6), Bac Ninh (5), Dien Bien (3), Hoa Binh, Hung Yen and Bac Giang 2 shifts each, Hai Phong, Ha Giang one shift each.