Other Factors Accompanied with Cold Weather that Might Affect the Spread of SARS-CoV-2
First, cold weather might be more suitable for coronavirus to survive (Araújo, Naimi, 2020). Second, cold weather may force vasoconstriction of the respiratory tract and weaken the immune system at the same time. Plus, cold air may cause small ruptures on mucosa and foster the proliferation of the virus (Bu et al., 2020). What's more, cold weather is always accompanied by other diseases, like flu. And these diseases may trigger the development of SARS-CoV-2. So, cold weather should play a role in the transmission of COVID-19.

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SARS-CoV-2 (COVID-19)
Biomedical Sciences
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