Covid-19 calculator voor buiten

Estimation of COVID-19 aerosol transmission outdoors (Skagit Choir Repeat) during daytime, relatively crowded conditions (1.3 persons / m2) - S
 Input Parameters Value Value in other units Source Surface area sq ft = m2 Just assuming a value, similar to choir outbreak case Height ft = m Assuming that air within this height can get mixed to respiratory height Volume m3 Infected people person Just assuming a value, similar to choir outbreak case Susceptible people people Just assuming a value, similar to choir outbreak case Breathing rate (index case) 1.1 m3 / h Estimated from Miller et al. (2020), for someone singing Breathing rate (susceptible) m3 / h Estimated from Miller et al. (2020), for someone singing Duration of event min h Just assuming a value, similar to choir outbreak case Wind speed km/ h m/s 1/2 of low end of average daytime US wind speed per https://sciencing.com/average-daily-wind-speed-24011.html Ventilation w/ outside air h-1 Same as "air changes per hour", calculated approximately from the wind speed Decay rate of the virus h-1 Estimated (UV index 5, default T & RH) from https://www.dhs.gov/science-and-technology/sars-airborne-calculator Deposition to surfaces h-1 Buonnano et al. (2020), Miller et al. (2020). Could vary 0.24-1.5 h-1, depending on particle size range Additional control measures h-1 E.g. UV disinfection, personal HEPA air cleaner, etc. Total first order loss rate h-1 CONDITIONAL RESULT: Case with one person infected, everyone else is susceptible Quanta emission rate (infected) q h-1 Just assuming a value, similar to choir outbreak case. This should be an upper limit for COVID-19. See Readme Mass efficiency for emission No masks were worn, for comparison with choir outbreak Net emission rate q h-1 Includes the number of infected people above Avg Quanta Concentration q m-3 Equation (4) in Miller et al. (2020) Quanta inhaled per person quanta Probability of infection (1 person) Equation (1) in Miller et al. (2020) Number of COVID cases arising