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COVID-19 and Ventilation
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Direct and indirect modes of COVID-19 transmission to humans through droplets from coughing or sneezing, close contact and prolonged exposure to the infected person and exposure to the contaminated surfaces has been reported in the literature. Findings of several reviewed articles mentioned the strong possibility of the airborne transmission of SARS-CoV-2 in indoor air settings. Aerosolized transmission in the crowded, confined and poorly ventilated settings have been suggested too.
Environmental factors such as, temperature, humidity, ventilation and filtering systems in the indoor environment could play a significant role in the transmission of the infection.
It is important to adopt engineering solutions, such as upgrading the ventilations system, proper ventilation according to the number of person in the room, establishing the minimum Relative humidity, use of proper filters along with other measures such as hand washing, disinfection of fomites, wearing of masks and uncrowded spacing to minimize the risk of infections. Engineering, behavioural and procedural solutions are required to reduce the risk of transmission.
What strategies can be employed to minimize the transmission in the indoor settings?
Interesting read
Posted : May 26, 2021 11:41 am
COVID-19 is transmitted through contact with respiratory fluids carrying the infectious SARS-CoV-2 virus, a person can be exposed by an infected person coughing or speaking near them. They can also be exposed by inhaling aerosol particles that are spreading away from the infected person. Transmission of COVID-19 from inhalation of virus in the air can occur at distances greater than six feet. Particles from an infected person can move throughout an entire room or indoor space. In fact, CDC stated that "Indoor spaces are more risky than outdoor spaces where it might be harder to keep people apart and there’s less ventilation.”
So, here are some indoor ventilation strategies to prevent the risk of COVID-19 infection.
1. open windows or doors for natural air
2. increase the volume of outdoor air.
3. add portable air cleaners.
4. keep bathroom exhaust fan running.
5. use small carbon monoxide monitor to verify adequate ventilation.
Posted : July 9, 2021 1:10 pm
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