- Study hints Covid-19 may have been in the US as early as December https://www.cnn.com/2020/09/15/health/covid-19-in-us-in-december/index.html 27 comments worldnews
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- Breaking News, Latest News and Videos | CNN https://www.cnn.com 107850 comments
- First Case of 2019 Novel Coronavirus in the United States | NEJM https://doi.org/10.1056/NEJMoa2001191 354 comments
- Coronavirus Disease 2019 Case Surveillance â United States, January 22âMay 30, 2020 | MMWR https://www.cdc.gov/mmwr/volumes/69/wr/mm6924e2.htm 7 comments
- https://www.sciencedirect.com/science/article/pii/S1567134820301829 0 comments
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