Volume 20, Number 12—December 2014
Research
Circulation of Reassortant Influenza A(H7N9) Viruses in Poultry and Humans, Guangdong Province, China, 2013
Changwen Ke, Jing Lu, Jie Wu, Dawei Guan, Lirong Zou, Tie Song, Lina Yi, Xianqiao Zeng, Lijun Liang, Hanzhong Ni, Min Kang, Xin Zhang, Haojie Zhong, Jianfeng He, Jinyan Lin, Derek Smith, David Burke, Ron A.M. Fouchier, Marion Koopmans, and Yonghui Zhang
Table 1
Demographic and clinical characteristics of influenza A(H7N9) case-patients detected through enhanced surveillance in Guangdong Province, China, March 2013–February 2014
| Characteristic |
No. (%) case-patients |
|---|---|
| Sex* | |
| M | 48 (59.3) |
| F |
33 (40.7) |
| Age group, y† | |
| ≤20 | 12 (14.8) |
| 21–40 | 13 (16.0) |
| 41–60 | 25 (30.9) |
| ≥61 |
31 (38.3) |
| Exposure history | |
| Live poultry market visit | 47 (58.0) |
| Household poultry breeding | 10 (12.3) |
| Poultry processing | 5 (6.2) |
| Mixed | 11 (13.6) |
| None known |
8 (9.9) |
| Clinical use of oseltamivir‡ | |
| Used | 65 (80.2) |
| Unknown |
16 (19.8) |
| Clinical condition | |
| Influenza-like illness | 11 (13.6) |
| Pneumonia | 14 (17.3) |
| Mild influenza | 2 (2.5) |
| Severe influenza |
54 (66.7) |
| Outcome | |
| Death | 22 (27.2) |
| Recovery | 45 (55.6) |
| Hospitalization | 14 (17.3) |
*M:F sex ratio 1.5:1.
†Median patient age 52.0 y.
‡Mean time from symptom onset to diagnosis 8.5 d; mean time from symptom onset to use of oseltamivir 5.2 d.
Page created: November 18, 2014
Page updated: November 18, 2014
Page reviewed: November 18, 2014
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