Role of air temperature and humidity in the transmission of SARS-CoV-2 in the United States.


attributable to SH was 14.47% (95% eCI: 14.37 - 14.54%). These fractions generally were higher in northern counties than in southern counties. Our findings indicate that cold and dry weather are moderately associated with increased SARS-CoV-2 transmissibility, with humidity playing a larger role than temperature.

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Sen Pei

Associate Research Scientist
Columbia University