Chart explaining how rhinovirus (common cold), coronavirus (covid-19), influenza A (seasonal flu) interact

[Yongpeng Sun-Tastaufen]

This explains why cold is the most common throughout the year, only decrease somewhat in winter, and flu is least common throughout the year, only appearing in December and January.

source: https://www.mdpi.com/2079-7737/10/8/733/htm

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