Table 1.
Important events in the influenza A H7N9 outbreak in 2013
| Place or organisation | Event | |
|---|---|---|
| Feb 18, 2013 | Shanghai | Case one: symptom onset |
| March 4, 2013 | Shanghai | Case one: died |
| March 10, 2013 | Shanghai | Case two: died |
| March 13, 2013 | Shanghai | Cases 73–77: symptom onset (retrospectively diagnosed on April 16, 2013); cases one and 76 represent first family cluster; another son of case one also died without virological diagnosis |
| March 31, 2013 | Shanghai Anhui Chinese Centre for Disease Control and Prevention, China |
Cases one and two (both fatal) reported First case in Anhui (case three) reported The China Health and Family Planning Commission notified the WHO of three cases of human infection with influenza A H7N9 (cases one to three) |
| Aprilil 2, 2013 | Jiangsu | First four cases in Jiangsu (cases four to seven) reported |
| April 3, 2013 | Zhejiang | First two cases in Zhejiang (cases eight and nine) reported |
| April 4, 2013 | Shanghai | First mild case (case 14) reported; one market pigeon positive for H7N9 virus |
| April 5, 2013 | Shanghai | Culling of 20 536 poulty: 19 poultry and environmental samples from three markets positive for H7N9 very similar to pigeon isolate |
| April 6, 2013 | Ministry of Health, China Shanghai, Jiangsu, and Zhejiang |
Approval of peramivir as anti-influenza drug in China Suspension of live poultry trading; culling of >20 000 live birds |
| April 8, 2013 | Ministry of Health, China | Development of vaccines for H7N9 announced |
| April 10, 2013 | Shanghai Jiangsu, Zhejiang, Anhui |
Case 14 recovered and discharged from hospital Duck and chicken samples positive for H7N9 |
| April 13, 2013 | Beijing Shanghai |
First case outside the Yangtze River delta (case 44) reported Second cluster in family: case 47 and case 13 |
| April 14, 2013 | Henan | More cases outside the Yangtze River delta (cases 50 and 51) reported |
| April 15, 2013 | Beijing | Third cluster: the first asymptomatic carrier (case A1) detected during contact tracing of case 44 |
| April 18, 2013 | Henan | Another case outside the Yangtze River delta (case 83) reported |
| April 19, 2013 | World Health Organization | Fourth cluster in family announced |
| April 23, 2013 | Shandong | First case in Shandong (case 105) reported |
| April 24, 2013 | Taiwan | First case outside the mainland (case 109) reported |
| April 25, 2013 | Jiangxi | First case in Jiangxi (case 113) reported |
| April 26, 2013 | Fujian | First case in Fujian (case 115) reported |
| April 27, 2013 | Hunan | First case in Hunan (case 120) reported |
| May 5, 2013 | China | A total of 51 poultry and environmental samples from multiple regions were positive for H7N9 |
| As of June 26, 2013 | World Health Organization | A total of 132 symptomatic cases with 40 fatalities reported globally |
See appendix for details of individual cases.