🔴 Risk of SARS-CoV-2 transmission from asymptomatic people in different settings and for different occupation times, venting, and crowding levels (ignoring variation in susceptibility and viral shedding rates).
Face covering refers to those for the general population and not high grade respirators. The grades are indicative of qualitative relativerisk and do not represent a quantitative measure.
Other factors not presented in these tables may also need to be taken into account when considering transmission risk, including viralloadof an infected person andpeople’s susceptibility to infection. Coughingor sneezing, even if these aredue to irritation or allergies while asymptomatic, would exacerbate risk of exposure across an indoor space, regardless of ventilation.
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