COVID-19 may have arrived in US by December 2019 - Livescience.com

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1. COVID-19 may have arrived in US by December 2019  Livescience.com
2. CDC study suggests COVID-19 may have been in US in December 2019  WPRI.com
3. A new study found coronavirus may have been in the US in December. That doesn't mean you'll ever know if you had it then  KTVZ
4. Virus May Have Arrived in U.S. in December, but Didn’t Spread Until Later  The New York Times
5. View Full Coverage on Google News

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COVID-19 may have arrived in US by December 2019 - Livescience.com
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