Regarding cases in children. Did they have moderate or severe cases of respiratory distress in children? Were they also associated with comorbidities or surgical events? Breastfeeding mothers transmitted immunity to their children? Was there any difference in the treatment of children with severe conditions compared to the treatment of adults? / 关于儿童病例。是否有儿童患有中度或重度呼吸窘迫病例? 还与共病症或外科手术有关吗?母亲是否能通过母乳给孩子传送免疫抗体?与成人的治疗相比，重症儿童的治疗是否有差异?