Dr. Shruti Gohil, the associate medical director of epidemiology and infection prevention at UCI Health, said there does appear to be some degree of seasonality to COVID-19 already. … “Research is still evolving, but there is some evidence that the virus dies when exposed to certain levels of UV light, making it harder to spread during the sunny summer months as opposed to winter,” said Dr. Bernadette Boden-Albala, MPH, DrPH, director and founding dean of the Program in Public Health at the University of California, Irvine.
COVID-19 will likely become a seasonal disease, CDC director says
Healthline, March 11, 2022
March 11, 2022