Increase in Covid-19 spread linked to natural UV level decrease: Study

updated: Dec 17 2020, 14:43 ist Natural variations in ultraviolet radiation influences the spread of the novel coronavirus, says a new study which adds that the effect is still modest compared to that of measures like physical distancing, and mask wearing. The findings, published in the journal PNAS, suggests that the incidence of Covid-19 may have a seasonal pattern in which the virus spreads faster in the winter when it's darker with lower levels of UV radiation than during summer. "Understanding the potential seasonality of Covid-19 transmission could help inform our response to the pandemic in the coming months," said Jonathan Proctor, a co-author of the study from Harvard University in the US.