Impact of climatic, demographic and disease control factors on the transmission dynamics of COVID-19 in large cities worldwide

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Approximately a year into the COVID-19 pandemic caused by the SARS-CoV-2 virus, many countries have seen additional “waves” of infections, especially in the temperate northern hemisphere. Other vulnerable regions, such as South Africa and several parts of South America have also seen cases rise, further impacting local economies and livelihoods.

Despite substantial research efforts to date, it remains unresolved as to whether COVID-19 transmission has the same sensitivity to climate observed for other common respiratory viruses such as seasonal influenza. Here, we look for empirical evidence of seasonality using a robust estimation framework.

Photo credit: Cows walk along an irrigation canal in Niolo, Mali (ILRI/Stevie Mann)

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