Characteristic | Number (%) |
---|---|
Age(months) | |
 0–11 | 166(24.3%) |
 12–23 | 189(27.7%) |
 24–35 | 101(14.7%) |
 36–47 | 116(16.9%) |
 48–59 | 112(16.4%) |
Sex | |
 Male | 421(61.6%) |
 Female | 263(38.4%) |
Season | |
 Spring(January–March) | 161(23.5%) |
 Summer(April–June) | 252(36.8%) |
 Autumn(July–September) | 123(18.0%) |
 Winter(October–December) | 148(21.6%) |
Clinical Symptoms | |
 Nausea | 60(10.8%) |
 Vomiting | 114(20.6%) |
 Abdominal pain | 268(48.3%) |
 Fever(> 37.2 °C) | 97(17.4%) |
 others | 16(2.9%) |