Can we really say that the Covid-19 epidemic began in the summer of 2019?

THE QUESTION. According to Harvard epidemiologists, the epidemic of the new coronavirus could have started much earlier than we thought, as early as August 2019 in Wuhan, epicenter of the epidemic in China. Officially, the first patients with Covid-19 were discovered at the end of December 2019. Is the hypothesis of the emergence of the coronavirus in the human population at the end of last summer serious, and is it compatible with what we know about the virus?

CHECK . Epidemiologist Elaine Okanyene Nsoesie and her four colleagues from Boston University School and Harvard Medical School had a big impact when they said they saw signs that would indicate the start of the Covid-19 epidemic at the end of the summer. 2019. An interest probably caused by the prestige of the institutions in which they work, but also by the originality of the techniques used to achieve these results. Even if their work has not yet been accepted by a scientific journal

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