The first cases of the coronavirus in France existed back in December — a month earlier than was previously known, researchers say.
Dr. Yves Cohen, head of emergency medicine at Avicenne and Jean-Verdier hospitals near Paris, said that he and other doctors made the discovery after they retested samples from patients with influenza-like illnesses who had been in intensive care units between early December and mid-January.."In April, we defrosted the samples we had stored, and we tested them again, but this time for traces of COVID-19.
Hammar was tested on Dec. 27. Because the symptoms of COVID typically take 5 to 14 days to appear, Cohen believes Hammar was infected between Dec. 14 and Dec. 22. Cohen says researchers will now study the genetic code of the virus that infected Hammar, to see if it can be linked to other samples analyzed in China. If a link is found to a different kind of coronavirus than was previously identified in France, it would have important implications, he said:"It would point to different contamination sources worldwide."
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