The COVID-19 Indoor Safety Guideline: The COVID-19 Indoor Safety Guideline is an evolving tool intended to familiarize the interested user with the factors influencing the risk of indoor airborne transmission of COVID-19, and to assist in the quantitative assessment of risk in various settings. We note that uncertainty in and intrinsic variability of model parameters may lead to errors as large as an order of magnitude, which may be compensated for by choosing a sufficiently small risk tolerance. Our guideline does not take into account short-range transmission through respiratory jets, which may substantially elevate risk when face masks are not being worn, in a manner discussed in the accompanying manuscript
One person in the room with you has COVID-19. Here’s how long it takes to get infected: MIT researchers have built a simple tool to give clear guidelines on indoor safety in the midst of a pandemic.
