美国CDC:2017年美国约50000人死于肺炎,平均每天137人。
CDC data showed that in the United States during 2017:
3 million people were diagnosed with pneumonia in an emergency department
Approximately 50,000 people died from pneumonia
https://www.cdc.gov/pneumonia/prevention.html
50,000 / 365天 = 137/天