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.