Study: COVID-19 prefers cool, dry climate. The virus would follow a seasonal calendar


International researchers suggest in a study that the SARS-CoV-2 virus follows a seasonal schedule and prefers a cool, dry climate.

The study, led by the University of Maryland in Baltimore (USA), was published in the Journal of the American Medical Association (JAMA), according to Agerpres.

The researchers looked at the association between climate type and the spread of COVID-19 infection, examining climate data in cities around the world affected or not by coronavirus between January 1 and March 10 this year.

Thus, they compared eight cities with a strong spread of the epidemic (Wuhan, China; Tokyo, Japan; Daegu, South Korea; Qom, Iran; Milan, Italy; Paris, France; Seattle, USA; and Madrid, Spain) with other 42 cities that were not affected or that did not register contagions with the new coronavirus.

Similarities between the most affected cities

The study found that the cities most affected by the pandemic are on a latitude corridor between 30 and 50 degrees north (N), and their climate patterns are similar: they have an average temperature between 5 and 11 degrees Celsius and a humidity low specificity (between 44 and 84%), when the virus spreads faster.

The mapping by the research team showed a climatic strip in the northern hemisphere that includes atmospheric conditions conducive to coronavirus and that includes eight cities, including Madrid.

Thus, the study shows that the distribution of substantial outbreaks of COVID-19 caused by values ​​such as latitude, temperature and humidity are consistent with the behavior of the seasonal respiratory virus and that SARS-CoV-2 is more difficult to spread under conditions of higher temperature and humidity.

An analysis of the distribution of coronavirus outbreaks could help prevent areas at high risk of transmission in the future, although the study’s authors warn that new research on climate models is needed.

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