COVID-19 silently arrived in US near Christmas — earlier than thought, UCLA study says - Mr.IT

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COVID-19 silently arrived in US near Christmas — earlier than thought, UCLA study says

COVID-19 silently arrived in US near Christmas — earlier than thought, UCLA study says

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COVID-19 silently arrived in US near Christmas — earlier than thought, UCLA study saysCoronavirus had reached the U.S. and was spreading weeks before any cases were confirmed, the study says.




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