Retesting in France reveals its first COVID-19 case was in December 

Patient Kouyate, 69-year-old, practices rehabilitation exercises with physiotherapist Christophe Passot after spending 21 days in the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at the Centre Cardiologique du Nord private hospital in Saint-Denis near Paris as the spread of the coronavirus disease continues in France, April 22, 2020.  REUTERS/Gonzalo Fuentes - RC2P9G9CR8AG

An old pneumonia sample in France has been retested as positive for COVID-19, almost a month before their first confirmed case. Image: REUTERS/Gonzalo Fuentes - RC2P9G9CR8AG

Reuters Staff
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