ROME – According to the research “Simulated Sunlight Rapidly Inactivates SARS-CoV-2 on Surfaces”, published by theOxford University on the Journal of Infectious Diseases, the sunlight would be able to inactivate after a few minutes the Coronavirus contained in the saliva droplets, among the main vehicles of the virus, and deposited on the surfaces. From the preface we read: “Recent studies have shown that the COVID-19 virus is stable on surfaces for long periods indoors”. A thesis that would have been disproved by the researchers engaged in these research, who carried out experiments “artificially recreating the light and solar radiation representative of the summer solstice at 40 ° N latitude at sea level on a clear day”.
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“The sun inactivates the virus”
What has emerged is that this would be able to kill 90% of the viruses contained in saliva in just 6.8 minutes, while it uses 14.3 of them in culture media. “There has also been significant inactivation, albeit at a slower rate, at lower sunlight levels. The present study – it is read – provides the first evidence that sunlight can rapidly inactivate SARS-CoV-2 on surfaces, suggesting that persistence, and therefore the risk of exposure, can vary significantly between indoor and outdoor environments. Additionally, these data indicate that natural sunlight can be effective as a disinfectant for contaminated non-porous materials. “