![]() “When we're talking about filtration, it's pretty much similar to thinking about like a mask for your HVAC system: If the air is recirculating, it draws the air past that.” “If your HVAC system has that capability, then bringing in the fresh air from outside is going to be better than recirculating whatever air is in the space - unless you're also using filtration,” Baker said. The same goes for when people outside your household enter your vehicle or home.Ī number of factors, including a building’s age, design, and heating ventilation and air conditioning (HVAC) system, will affect its capacity to maintain sufficient air flow and filtration in the time of Covid. If it’s not possible to keep a door open at all times, Baker advises opening the doors each hour to purge out stale air. Through interviews, cell phone location data, and surveillance footage, researchers determined that the infector’s airborne respiratory matter infected two others who were sitting approximately 16 and 21 feet away, respectively. “And depending on the quality of the mask you're wearing, how well you're wearing it, and how well it fits, these particles can also get out and around masks as well.”Ī study recently published in the Journal of Korean Medical Science recreated a scenario in which three Covid-19 cases tied to an indoor restaurant surfaced. Marissa Baker, a professor at the University of Washington’s Department of Environmental and Occupational Health Sciences who specializes in industrial hygiene. “Just being six feet away from somebody doesn't necessarily mean that you're protected from these small particles,” said Dr. But more recent research points to coronavirus containing aerosols traveling way beyond that. That's a good sign that there's not very good ventilation.”Įarlier in the pandemic, public health wisdom was that maintaining six feet of distance was ideal for reducing coronavirus spread via infected respiratory droplets, produced during speech, breathing, coughing, or sneezing, for example. Tan offers this advice: “If you walk into a space, and it seems stuffy, get out. No two indoor spaces are the same when it comes to ventilation. Smaller respiratory droplets known as aerosols can linger in the air for several hours, increasing the odds of airborne coronavirus transmission. ![]() There are several measures that, when used in tandem, can help cut down on person-to-person coronavirus transmission: Wearing a mask over your nose and mouth, frequently washing your hands, and only congregating with people whom you share a household, for instance.īut there's a less tangible factor that also plays a role in spreading the virus: Air flow. Many also still engage in not-so-essential indoor activities, such as receiving a professional haircut, going in for a manicure, or getting a new tattoo - all of which are still allowed under Washington’s latest statewide social restrictions. Limit time indoors around non-household members to mitigate coronavirus transmission, health officials have said throughout this pandemic.īut many people, by necessity, still patronize grocery stores and work in-person.
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