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Low Humidity, Dry Air May Increase Covid-19 Risk: A Study

 


IANS | 4 hours ago

Sydney, August 19: New research provides increasing evidence that low-humidity, dry air can increase the risk of the Covid-19 virus.

This study, published in Transboundary and Emerging Diseases, a journal focused on the Greater Sydney region during the early epidemics of Covid-19, found a link between reduced humidity and increased infection in the community. discovered.

“This second study adds to the increasing evidence that humidity is a major factor in the spread of Covid-19,” said Michael Ward, a research researcher at the University of Sydney, Australia.

It is estimated that a 10% decrease in relative humidity will approximately double the Covid-19 notification.

According to researchers, dry air seems to promote the spread of Covid-19, and time and place matter.

Accumulation of evidence indicates that climate is a factor in the spread of Covid-19, increasing the likelihood of seasonal disease outbreaks.

Studies have shown reduced humidity in several different areas of Sydney, consistently associated with increased cases. The same link was not found for other weather factors (rainfall, temperature, wind)

Additional evidence from the Sydney Covid-19 epidemic confirms cases related to humidity.

According to researchers, there are biological reasons why humidity is important for the transmission of viruses in the air.

“Low humidity dries the air and makes the aerosol smaller,” Ward said, adding that aerosols are smaller than droplets.

“When you sneeze or cough, these small infectious aerosols can remain suspended in the air, which increases your exposure to others.”

“If the air is damp and the aerosol is large and heavy, it will fall and hit the surface quickly,” Ward explained.

“This suggests that people need to wear masks to prevent infectious aerosols from leaking into the air in the case of infected people and to prevent exposure to infectious aerosols in the case of non-infected people.” The research authors wrote.

Previously, a study published in the Canadian Medical Association Journal found that temperature and latitude were not associated with the prevalence of Covid-19 disease.

Low Humidity, Dry Air May Increase Covid-19 Risk: Research

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