First case of COVID-19 in France traced back to December 27

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French scientists have identified the earliest-known case of COVID-19 in the nation: a patient who was treated in a hospital near Paris in December, an indication that the virus has been spreading across the world for far longer than had previously been known.

The doctors from the Groupe Hospitalier Paris Seine in Saint-Denis said a sample taken from a 42-year-old fishmonger, admitted to the emergency room on Dec. 27, had tested positive for the coronavirus.

The man reported coughing up blood, a headache and a fever. He was eventually admitted to the intensive care unit, though he recovered and was discharged on Dec. 29.

The discovery dramatically alters the timeline of the coronavirus, which has been responsible for more than 3.5 million confirmed COVID-19 cases around the world, including 169,000 in France, as well as more than a quarter-million deaths. The man's admission to the hospital came four days before the first reports of a cluster of unusual pneumonia cases in Wuhan, China, the epicenter of the outbreak.

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The French doctors identified the first case by re-testing samples taken from patients between early December and the middle of January, when the country confirmed its first case of the coronavirus. The doctors examined 124 samples taken from patients who had presented influenza-like illnesses, 80 of whom tested negative for viruses like influenza or other more common coronaviruses. Fourteen patients were identified as potentially suffering from the coronavirus, and one tested positive for the virus.

The doctors said the man showed symptoms consistent with those of patients who tested positive later in China and Italy, thought to be the site of the first significant spread of the virus in Europe.

"COVID-19 is considered to be responsible for 86,334 cases and 12,210 deaths as of April 10, 2020 in France, but our findings suggest that these numbers could be underestimating the actual burden of COVID-19," the doctors wrote.

The United States has found its own earlier cases of the coronavirus than initially thought. The Santa Clara, Calif., medical examiner's office recently reclassified the death of a woman in early February as being due to the coronavirus, about three weeks before the first known death on American soil.

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