Cross infection rate 交叉感染率
Cross infection in hospital 院内感染
their cross infection 交互侵染
hospital cross infection 医院感染
Prevent cross infection 防止交叉感染
Prevent Viral Cross Infection 防止病毒交叉感染
Reducing Cross Infection Pollution 减少交叉感染污染
Cross Infection Control Office 院感办
neonate cross infection in hospital 新生儿医院感染