The second case is a 28-year-old male resident of Wuhan city, Hubei province, China; son of the first case. He has been working in Long An province and in the past four months he has not gone back to Wuhan or China. He accompanied his father from 17 January after they met in Nha Trang. On 20 January, he developed fever and was admitted to Cho Ray hospital on 22 January, together with his father.

The following three additional cases are workers in the same company who were sent to Wuhan City, Hubei province, China for a training two months ago. They all came back to Ha Noi on the same flight on 17 January 2020.

The third case is a 25-year-old female, resident of Thanh Hoa province. On arrival in Noi Bai international airport on 17 January 2020 she did not present with symptoms. On 24 January she developed fever and cough. She was admitted to Yen Dinh district general hospital in Thanh Hoa province then was referred to the provincial hospital, still with fever and cough, where she has been isolated since. The patient is reportedly in stable condition.

The fourth case is a 29-year-old male, resident of Vinh Phuc province. On arrival in Noi Bai international airport on 17 January 2020 he did not present with symptoms. On 21 January, he developed some respiratory symptoms and went to a private clinic in Tam Duong district, Vinh Phuc province. As his symptoms did not improve, he was admitted to the general hospital of Vinh Phuc province on 23 January 2020, but his health condition did not improve.  On 26 January, he was referred to the National Hospital for Tropical Diseases in Ha Noi for treatment. Currently he is in a stable condition.

The fifth case is a 23-year-old female, resident of Vinh Phuc province. On arrival in Noi Bai international airport on 17 January 2020 she did not present with symptoms. On 25 January, she was reportedly having symptoms and admitted to the National Hospital of Tropical Diseases in Ha Noi for treatment on the same day. Currently she is in a stable condition.

The sixth case is a 25-year-old female, who is a Vietnamese national, she is a resident of Van Ninh district, Khanh Hoa Province and works as a receptionist at a local hotel. On 16 January, she received two Chinese travelers who arrived to check into the hotel.  The two Chinese travelers (cases one and two) were diagnosed positive with 2019-nCoV as stated above. On 18 January, the sixth case developed a light cough and fever, once reportedly taking two doses of medication (not clear what type of medication), her fever subsided but cough persisted. On 24 January 2020, her cough remained, and she was referred to the hospital for tropical diseases in Khanh Hoa Province where she has been treated and isolated since.

This is the second reported case in Viet Nam reporting human-to-human transmission and the first confirmed case of 2019 nCoV transmitted to a local Vietnamese individual.