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There's a seasonality to many respiratory #viruses. Will #SARSCoV2 [#COVID19] follow a similar pattern? We hope so BUT we don't really know. We know when air is humid / warm ➡️droplets gather more moisture ➡️too heavy to stay airborne / fall more quickly➡️transmission harder. 
There was a significant correlation between #SARS cases & environmental temperature. A sharp rise or decrease in the environmental temperature related to the cold spell led to an increase of SARS cases because of the possible influence of the weather on the human immune system.
Plus the winter season has a profound effect on how human #genes work - this may explain why some illnesses are aggravated in the #winter. During cold, winter months, genes involved with #immunity & specifically #inflammation were more active. nature.com/articles/ncomm…
