A French hospital that retested old samples from pneumonia patients has discovered that it treated a man with the coronavirus as early as 27 December, nearly a month before the French government confirmed its first cases. [...]
Knowing who was the first is critical to understanding how the virus spread but Cohen said it was too early to know whether the patient was France’s “patient zero”. [...]
“We’re wondering whether she was asymptomatic,” he said. “He may be the ‘patient zero’, but perhaps there are others in other regions. All the negative PCRs for pneumonia must be tested again. The virus was probably circulating.”
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