6 feet distance is not enough to prevent corona infection at home – Study


Covid Risk Even After 6 Feet Distance: With this basic mantra, ‘two yards distance, mask is necessary…’ we all have come to consider ourselves as the most effective way to protect ourselves from Coronavirus, but according to a recent study, the physical distance of 2 meters i.e. about 6 feet infection. Not enough to stop. According to the study, this distance is not enough to adequately prevent the transmission of airborne aerosols that carry the virus indoors. The results of the study, published in the Sustainable Cities and Society Journal, suggest that physical distancing alone is not sufficient to prevent exposure to human-exposed aerosols and can be replaced by other control strategies such as masking and adequate Should be applied with ventilation.

Researchers examined three factors for their study. First, ventilated space and air volume, second, indoor airflow patterns associated with multiple ventilation strategies, and third, aerosol emission mode when breathing while talking.

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It also compared the transport of tracer gas, commonly used to test for leakage in air-tight systems, and human respiratory aerosols ranging in size from 1 to 10 micrometers. Aerosols in this category can carry SARS-CoV-2, the virus that causes COVID-19.

indoor exposure to virus
General Pei, a doctoral student at Pennsylvania State University in the US and the first author of the study, said, “We set out to explore the air transport of virus-laden particles from infected people into buildings, We examined the effects of building ventilation and physical distancing as control strategies for indoor exposure to airborne viruses.”

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no ventilation is dangerous
Studies show that virus-laden particles from talking to an infected person – without a mask – can travel quickly, even two meters (about 6 feet) into another person’s breath within a minute. This can happen even if there is a distance. The study’s corresponding author and associate professor, Donghyun Rim, said, “This trend was observed in rooms that did not have adequate ventilation.”

Researchers found that these aerosols flow more quickly in rooms with displacement ventilation, where fresh air continuously flows through the floor and pushes old air into an exit vent near the ceiling. This type of ventilation system is installed in most of the houses.

Comparison between office and home
Dongyun Rim further said that one of the surprising results is that the likelihood of airborne infection in residential environments may be much higher than in office environments. He stressed, “Physical distancing, ventilation and wearing of masks should be considered together to control airborne infections.”

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