和我原来的认识不同，这个病死的主要还是65岁以上的。2020年新冠出现后，RSV急剧减少，但是到2021年春天，在美国南部又多了起来，一直到7月平息，Pattern 与新冠疫情前不同。
Each year in the United States, RSV leads to approximately:
- 2.1 million outpatient (non-hospitalization) visits among children younger than 5 years old.(1)
- 58,000-80,000 hospitalizations among children younger than 5 years old.(2,3)
- 60,000-120,000 hospitalizations among adults 65 years and older.(4,5)
- 6,000-10,000 deaths among adults 65 years and older.(6,7)
- 100–300 deaths in children younger than 5 years old.(7
