Details of the cases are as follows:

The patient reported on 22 April is a 44-year-old woman from Nanjing, Jiangsu Province, China, who travelled to Taipei with a 33-member tourist group. She was ill on 12 April and had been to a local hospital in Nanjing. The patient had an underlying medical condition. Despite general weakness and poor appetite, she travelled to Taipei with the group on 17 April. She was admitted to hospital in Taipei on 19 April and subsequently transferred to a medical center on 20 April. She was laboratory confirmed on 22 April.

Within one week before disease onset she had purchased a slaughtered chicken at a wet market and cooked in Mainland China.

Taipei CDC obtained the list of the other 32 tour members on 22 April; the tour group returned to its origin on 24 April. As of 23 April, one member developed fever.

The patient reported on 25 April is a previously healthy 39 year-old man who frequently travels across the Taiwan Strait. He became ill on 19 April and was hospitalized on 23 April. He was laboratory confirmed on 25 April. The patient visited Beijing and Jiangsu from 31 March to 19 April. He denied exposure to poultry or wet markets while in Mainland China.