A long green stripe on a world map. What if Sars-Cov-2, a virus associated with Covid-19 disease, was different from its congeners Sars-Cov-1 and Mers? What if it was, like the flu, a seasonal virus? For an uninitiated, this does not mean much. But for the virologist that is Mohamed Sajadi, of the Institute of Human Virology, at the University of Maryland, in the United States, and member of the Global Virus Network, this raises other questions: would this new virus be influenced by weather and climate conditions? If so, could we not include these factors in epidemiological models to anticipate the spread of the disease?
The researcher brought together six American and Iranian colleagues who worked with their various skills on this hypothesis. Their conclusion: Covid-19 would spread particularly quickly when subjected to a certain combination of humidity and temperature, which has been found
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