Image shows why Australia is at risk

www.dailytelegraph.com.au
4 min read
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<p>A startling new image has revealed just how much risk could be posed by aerosolised particles within a matter of seconds.</p>
A startling new image has revealed just how quickly aerosolised particles can spread and what that may mean for transmission.

A startling new image has revealed just how much risk could be posed by aerosolised particles within a matter of seconds.

The image was released in the Victorian government's "Aerosol hot spot study within healthcare environments" and shows how many aerosols are dispersed in a hospital room just two minutes after a cough.

According to the Victorian Health Building Authority paper, the aerosols would evenly cover a large portion of the room, linger in the air and be dispersed over the window.

After another two minutes, most of the particles would either have deposited within the room or been removed by the heating, ventilation and airconditioning system.

While researchers did not model Covid-19 particles or transmission rates, it did acknowledge coronavirus could be transmitted by aerosols in specific circumstances.

Aerosol distribution at 120 seconds after coughing in a hospital room.

Aerosols are tiny solid or liquid particles suspended in air or as a gas on which gravity has little effect and that eventually come to rest on a surface.

The study simulated aerosols generated from a single cough and identified the settling points of the aerosols within four typical healthcare settings to assist with infection prevention and control strategies.

Aerosols collected on the patient table 30 seconds after coughing.

It found that aerosols were likely be deposited around exhaust grilles, on sharp obstructions jutting out from flat surfaces, such as chair legs, phones and TVs on walls, or push bars on…
Jack Paynter
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