Six people get together in a private home, one of whom is infected. Some 31% of coronavirus outbreaks are caused by this kind of gathering mainly between family and friends.
Irrespective of whether safe distances are maintained, if the six people spend four hours together talking loudly, without wearing a face mask in a room with no ventilation, five will become infected.
If face masks are worn, four people are at risk of infection. Masks alone will not prevent infection if the exposure is prolonged.
The risk of infection drops to below one when the group uses face masks, shortens the length of the gathering by half and ventilates the space used.
These are respiratory droplets that are less than 100 micrometers in diameter that can remain suspended in the air for hours
These are particles that are larger than 300 micrometers and, due to air currents, fall to the ground in seconds
Without ventilation, aerosols remain suspended in the air, becoming increasingly concentrated as time goes by.
In the worst case scenario – shouting or singing in a closed space for an hour – a person with Covid-19 releases 1,500 infectious doses.
The Air Guardian provides a continuous, high rate of room air changes by rapidly ingesting and disinfecting the air (with a 99.99% disinfection rate in a single-volume pass) surrounding and within the safe zone up to clarify area size in m2