Study supports airborne transmission of COVID-19 in enclosed spaces
Washington: Findings of a current examine from the University of Georgia assist rising proof for airborne transmission of COVID-19 in enclosed areas. Researchers had been in a position to hyperlink a neighborhood outbreak of COVID-19 in China to a supply affected person who probably unfold the virus to fellow bus riders by way of the bus`s air con system.
“The possibility of airborne transmission has long been suspected, but with limited empirical evidence. Our study provided epidemiologic evidence of transmission over long distances, which was likely airborne,” mentioned Ye Shen, an affiliate professor of epidemiology and biostatistics at UGA`s College of Public Health and lead writer on the examine.
The examine, which was revealed lately in JAMA Internal Medicine, calls into query the prevailing thought on how COVID-19 can unfold. “It was largely believed that close contact through droplets is a major route of transmission for COVID-19. However, the widely adopted social distancing and handwashing did not effectively prevent transmission globally. Instead, the number of new COVID-19 cases increased steadily,” mentioned Shen.
Shen and his co-authors labored with epidemiologists from two regional Centers for Disease Control and Prevention in China to hint infections following a big outside worship occasion in Zhejiang province. Some of the attendees, it seems, took two buses to the occasion creating a singular pure experiment for the researchers.
Both buses had closed home windows and had the air con operating, mentioned Changwei Li, an affiliate professor of epidemiology at Tulane University and examine co-author – however one bus carried a affected person contaminated with the virus, and the opposite didn’t. Of the passengers who later acquired sick, the vast majority of them rode on the identical bus because the supply affected person.
Even although the 2 teams later combined in with the bigger crowd on the worship occasion, the variety of new instances attributed to the occasion was a lot decrease, suggesting that the bus was the most important level of transmission.
Further, among the bus passengers who later confirmed signs of COVID-19, the authors discovered, weren’t sitting near the contaminated passenger. These findings spotlight situations the place COVID-19 could possibly be unfold by way of superb aerosol particles being circulated in an enclosed house, and because the climate turns colder, Shen and Li hope this work will persuade extra individuals to put on face masks in public areas, notably in indoor areas.
“Understanding the transmission routes of COVID-19 is critical to contain the pandemic so that effective prevention strategies can be developed targeting all potential transmission routes,” mentioned Shen. “Our findings provide a solid support for wearing face-covering in enclosed environments with poor ventilation,” Shen added.
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