It may also explain why every year Corona Virus related infections appear in November and end in May.[1]

Also, SARS 1 ended at the beginning of June 2002. There is clearly a correlation that needs to be looked into.[2]

[1] https://www.medscape.com/answers/302460-86798/what-are-the-s...

[2] https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndr...