按照文化习俗，母亲陪在儿科病房和分担生病儿童的照护，从而也分担接触风险。

In line with cultural practices, mothers are present on the paediatric ward and share the care of severely ill children, thus also sharing the exposure risk.

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Children get diseases from a class of viruses called rotaviruses, for which we have no vaccine, and- and so no way to protect them.

儿童因轮状病毒而生病,而我们没有针对这种病毒的疫苗,所以,所以我们没有办法保护儿童

耶鲁公开课 - 生物医学工程探索课程节选