Table 2.
Clinical symptoms and signs in 1291 patients with 2009 H1N1 virus infection at hospital admission in China, May-July 2009. Figures are numbers (percentages) unless stated otherwise
| Characteristic | All patients (n=1291) | Children <15 years (n=406) | Adults ≥15 years (n=885) |
|---|---|---|---|
| Clinical symptoms: | |||
| Fever | 820 (64) | 268 (66) | 552 (62) |
| Cough | 864 (67) | 291 (72) | 573 (65) |
| Sore throat | 425 (33) | 116 (29) | 309 (35) |
| Sputum | 239 (19) | 81 (20) | 158 (18) |
| Rhinorrhoea | 228 (18) | 75 (18) | 153 (17) |
| Headache | 211 (16) | 57 (14) | 154 (17) |
| Weakness | 190 (15) | 47 (12) | 143 (16) |
| Nasal congestion | 149 (12) | 37 (9) | 112 (13) |
| Myalgia | 111 (9) | 20 (5) | 91 (10) |
| Chill | 72 (6) | 17 (4) | 55 (6) |
| Nausea | 22 (2) | 10 (2) | 12 (1) |
| Vomiting | 23 (2) | 13 (3) | 10 (1) |
| Diarrhoea | 19 (1) | 5 (1) | 14 (2) |
| Dyspnoea or shortness of breath | 0 (0) | 0 (0) | 0 (0) |
| Signs: | |||
| Pharyngeal congestion | 1026 (79) | 325 (80) | 701 (79) |
| Swollen tonsils | 442 (34) | 179 (44) | 263 (30) |