https://twitter.com/chen5374/status/1247678742283128837 Christie：Is it possible COVID19 was in the US in 2019before we had identified it? My son was hospitalized with low oxygen, pneumonia, respiratory illness and fever in Dec 2019. Fever was 10 days. Hospital stay 4 days. Very aggressive, dry, nonproductive cough.
Christie：Is it possible COVID19 was in the US in 2019before we had identified it? My son was hospitalized with low oxygen, pneumonia, respiratory illness and fever in Dec 2019. Fever was 10 days. Hospital stay 4 days. Very aggressive, dry, nonproductive cough.
怎么？戳到你痛处了？