Washington, Sep 15 (PTI) A physical distance of two yards (about six and a half feet) may not be enough to adequately prevent the spread of airborne aerosols that carry the virus, a study has claimed. That physical distancing is not enough to prevent inhaled aerosols and should be implemented in conjunction with other control strategies such as wearing masks and adequate ventilation. The researchers examined three factors: one location
The researchers examined three factors: the amount and rate of air entering a given ventral passage, the pattern of airflow into the interior spaces associated with different ventilation strategies, and the aerosols released from breathing versus talking.
They also compared tracer gas inflow to aerosols of one to ten micrometers released from human respiration, which are commonly used to test for leaks in airtight systems.
This range of aerosols contains the SARS-CoV-2 virus that causes COVID-19.
“We tried to trace the airborne transmission of virus-laden particles emanating from infected people in buildings,” said study author Zhen Pei, a PhD student at Pennsylvania State University in the US.
“We examined the effect of ventilation and physical distancing in buildings as containment strategies for indoor airborne viruses,” Pei said.
The study suggests that virus-laden particles in the breath of an infected person without a mask while talking can quickly reach another person’s respiratory area, even when keeping a distance of two yards.
The study is published in the journal ‘Sustainable Cities and Society’.