| ID | 原文 | 译文 |
| 49820 | (2）症状期 | During the symptomatic period |
| 49821 | (3）发病后/临床恢复期 | After the symptomatic period / during clinical recovery |
| 49822 | 四、感染风险因素 | Risk factors for infection |
| 49823 | 行为与社会经济学危险因素 | Behavioral and socio-economic risk factors for infection in |
| 49824 | (1)家庭/机构 | Households / institutions |
| 49825 | (2）社区 | the Community |
| 49826 | 无症状感染的危险因素 | Risk factors for asymptomatic infection |
| 49827 | 院内感染的危险因素 | Risk factors for nosocomial infection |
| 49828 | 医务人员之间 | among health care workers |
| 49829 | 患者之间 | among patients |