Coronavirus can travel much farther than 6 feet in certain indoor spaces, study finds


In addition to keeping your hands washed and wearing a face mask, experts have long recommended keeping at least six feet apart from others in an effort to prevent the spread of the new coronavirus.

But is that amount of distance enough?

Maybe not, a new study suggests that coronavirus-infected aerosols can travel more than six feet – at least in indoor spaces with poor ventilation.

Researchers at the University of Florida say their study provides “direct evidence” that virus-infected aerosols, like small droplets, could pose a risk for virus transmission.

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Health officials say the most common route of virus transmission occurs when an infected person coughs, sneezes or talks, and virus-laden particles land on someone nearby.

The World Health Organization last month updated its guidance to address the possibility of airborne transmission in full, poorly ventilated spaces, a message that expands the risk beyond medical procedures that generate aerosols, such as in dental care.

In the current study, researchers said their findings “reinforce the idea that airborne transmission of viable SARS-CoV-2 is likely and plays a critical role in the spread of COVID-19.” The study was published in the pre-print server medRxiv on August 4th. That means it has not yet been peer-reviewed.

Coronavirus-infected aerosols traveled more than six feet in a recent study.  (iStock)

Coronavirus-infected aerosols traveled more than six feet in a recent study. (iStock)

To complete the study, researchers collected aerosols containing the virus via VIVAS air samples in a hospital room containing coronavirus patients at the University of Florida Health (UF Health) Shands Hospital in Gainesville, Fla.

Two patients were in the hospital room being examined. One patient had coronary artery disease and her swab test was COVID-19 positive. The second patient was admitted four days in advance, testing positive at the time. When the air sampling was done, the second patient had negative tests and was in the process of being discharged.

The air samples were from 2 to 4.8 m (6.6 ft, 16 ft., Respectively) away from the patients and a viable virus was isolated in the air samples. In other words, researchers said the virus particles could travel up to 16 feet in a hospital room.

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“For transmission on aerosol-based measures, such as physical distance by 6 feet, would not be useful inside an facility and would provide a false sense of security,” research researchers wrote.

The study comes amid a thorny debate over reopening of schools as officials investigate health risks and the role of air-consumed COVID-19 transmission in classrooms.

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