Also Read | Finally, good news on white-collar jobs"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.In the research, the scientists analysed daily COVID-19 and weather data from over 3,000 administrative regions in more than 170 countries.They found that the spread of COVID-19 through a population tended to be lower in the weeks following higher UV exposure.While the reasons for seasonal variations in the spread of COVID-19 remain a mystery, the researchers said there have been some clues that UV could play a role.They said related species of coronaviruses such as SARS and.