Heat, humidity, UV rays moderately associated with lowering COVID-19 spread: Yale study [Video]

Experts said while meteorological factors help lower transmission rates, they don't replace public health measures

NEW HAVEN, Conn. —

study published by researchers at Yale School of Public Health concluded that the weather has a "moderate" association with lowering the transmission of COVID-19.

Researchers found that heat, warmer temperatures (more than 68 degrees Fahrenheit), increased humidity, and higher levels of UV radiation were all associated with lower transmission rates. 

The study found that 17.5% of the virus’ reproduction was due to meteorological factors.

Of that 17.5%, temperature accounted for 3.73%, humidity for 9.35% and UV radiation for 4.44%. Researchers found that humidity plays the greatest role in affecting transmission: inhaling cold, dry air decreases people's ability to produce mucus and fight off pathogens.

Researchers also said increased UV radiation helps the body produce vitamin D and other UV-mediated immune system boosters.

Earlier studies referenced by the Yale researchers found little to no association between …

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