Higher Solar Irradiance Is Associated With a Lower Incidence of Coronavirus Disease 2019.

Guasp, Mar; Laredo, Carlos; Urra, Xabier · Clin Infect Dis · 2020

cross_sectional · Level IV

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Abstract

We studied the relationship between the incidence of coronavirus disease 2019 (COVID-19), demographical, and climatological measurements in different regions across the world. Lower solar irradiance and higher population density were independent predictors of greater COVID-19 outbreaks. Further studies on the potential protective effect of sunlight over COVID-19 are warranted.

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