Thursday, February 14: First of three admissions to Shanghai No. 5 Hospital of men in the Li family in Shanghai. Two are sons aged 55 and 69; one is their father, aged 87, who reportedly falls ill on Tuesday, February 19: All three are diagnosed with pneumonia. The younger of the two sons dies in late February; the other recovers. Neither son tests positive for H7N9; the surviving son refuses to be tested again.
Wednesday, February 27: A 27-year-old Shanghai butcher, Mr. Liang Liang Wu, falls ill.
Monday, March 4: Mr. Li, the 87-year-old, dies 14 days after falling ill.
Thursday, March 7: Mr. Hong, 38, a chef working in Jiangsu province, falls ill.
Saturday, March 9: A 35-year-old woman in Chuzhou City, Anhui province, falls ill. Chuzhou is 322 km (200 miles) from Shanghai.
Sunday, March 10: Mr. Wu, the butcher, dies 11 days after falling ill.
Monday, March 18: Mr. Hong, the chef, enters hospital in his home town of Jiande, near Hangzhou in Zhejiang province.
Tuesday, March 19: Xu Wenqin, a 45-year-old Nanjing woman and poultry butcher, falls ill. So does a 48-year-old woman from Suqian.
Wednesday, March 20: An 83-year-old man in Suzhou falls ill. In Jiangsu, a 61-year-old woman named Yin falls ill.
Thursday, March 21: A 32-year-old woman from Wuxi falls ill. In Jiangsu, a 79-year-old man named Lu falls ill.
Monday, March 25: Mr. Yang, a 67-year-old retired man in Hangzhou, is admitted to hospital with a cough and fever. A new Shanghai patient, Mr. Shen, 59, a retiree from Anhui, falls ill.
Tuesday, March 26: Ms Yin in Jiangsu is hospitalized; she later tests positive for H7N9.
Wednesday, March 27: Xu Wenqin is transferred to intensive care after her condition worsens. Mr. Hong, the chef, dies in Zhejiang.
Thursday, March 28: The Wuxi woman is transferred to intensive care. In Shanghai, a 48-year-old man named Chu, who works in poultry transport, falls ill. A 74-year-old Shanghai man also falls ill. Mr. Lee, a poultry seller and butcher in Anhui province, falls ill.
Friday, March 29: The 83-year-old Suzhou man is admitted to a local hospital. A 64-year-old man from Huzhou City in Zhejiang falls ill. A 52-year-old Shanghai woman named Yu enters Changning District Central Hospital. A 66-year-old Shanghai man also falls ill. A new Shanghai patient, Mr. Lee, 67, falls ill.
Saturday, March 30: The woman from Suqian is transferred to intensive care in Nanjing. She and Xu Wenqin both test positive for H7N9. Mr. Lee is treated in hospital for pneumonia. Mr. Shen, 59, goes to hospital.
Sunday, March 31: The woman in Chuzhou City is in critical condition in a hospital in Nanjing, Jiangsu province, but still alive after 23 days. News of the H7N9 cases is made public and goes worldwide. The 32-year-old woman from Wuxi tests positive for H7N9. The 64-year-old man in Huzhou is hospitalized. Mr. Lu, the 79-year-old in Jiangsu, is hospitalized.
Monday, April 1: Mr. Lee, the 55-year-old Anhui poultry seller, is hospitalized in Bozhou City. His condition is stable.
Tuesday, April 2: The Chinese CDC confirms the H7N9 results for the Suqian woman and Xu Wenqin.
Wednesday, April 3: The two Zhejiang cases, Mr. Hong and Mr. Yang, are announced along with the death of Mr. Hong on March 27. Ms. Han in Chuzhou is still alive after 26 days. Mr. Chu, the 48-year-old Shanghai man, dies three hours after admission to Tongji Hospital. Ms Yu, the 52-year-old woman, dies Wednesday night. A close contact is in quarantine with fever.
Thursday, April 4: The 64-year-old man in Huzhou dies. The 67-year-old man in Zhejiang is in critical condition. A 4-year-old Shanghai boy is reported to be recovering. A 67-year-old Shanghai woman is in critical condition. Mr. Shen, 59, is moved to Yan Chai Hospital Pudong Branch for severe pneumonia.
Friday, April 5: A 7-year-old girl who had returned from a trip to Shanghai, Jiangsu and Hunan with her family tests negative for H7N9; she had a fever and sore throat. Mr Lu in Jiangsu tests positive for H7N9.
Saturday, April 6: The 74-year-old Shanghai man remains in critical condition. The 66-year-old Shanghai man, considered a mild case, may be recovering. Mr. Shen, 59, tests positive for H7N9.
Sunday, April 7: Mr. Lee, 67, tests positive for H7N9. He is in stable condition.To summarize the 6 deaths: Mr. Li on March 4, Mr. Wu on March 10, Mr. Hong on March 27, the 48-year-old Shanghai man Mr. Chu and 52-year-old Ms. Yu on April 3, and the 64-year-old Huzhou man on April 4.