Environmental Studies and Forestry

Role of meteorological factors in the transmission of SARS-CoV-2 in the United States

Y. Ma, S. Pei, et al.

This study conducted by Yiqun Ma, Sen Pei, Jeffrey Shaman, Robert Dubrow, and Kai Chen investigates the intricate relationship between air temperature, specific humidity, ultraviolet radiation, and the transmission of SARS-CoV-2 across 2669 U.S. counties. Discover how cold, dry weather and low UV radiation moderately influence the pandemic's transmissibility.

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Abstract

This study estimates the relationship between air temperature, specific humidity, ultraviolet radiation, and SARS-CoV-2 transmission in 2669 U.S. counties from March 15 to December 31, 2020. Lower air temperature (20–40 °C), lower specific humidity, and lower ultraviolet radiation were significantly associated with increased SARS-CoV-2 reproduction number (Rt). Meteorological factors contributed to approximately 17.5% of Rt, with humidity playing the largest role. These findings suggest that cold, dry weather and low UV radiation are moderately associated with increased SARS-CoV-2 transmissibility.

Publisher

Nature Communications

Published On

Jun 14, 2021

Authors

Yiqun Ma, Sen Pei, Jeffrey Shaman, Robert Dubrow, Kai Chen

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