To control the disease within cross-infection and spread, plays a very important role.
对控制内交叉感染，预防疾病传播，有着十分重要的作用。
2
Mainly in the hope that the children do not learn from the process of cross-infection of some diseases.
主要是希望孩子不要在学习的过程中交叉感染一些疾病。
3
Applies to travel, swimming, and other outdoor activities, care and cleaning after sterilization, to prevent contact with the cross-infection of disease.