Found this link, which I think corroborates the paper Wei Dai linked. Haven’t review it yet.
https://globalnews.ca/news/6815551/cough-chamber-physical-distancing-coronavirus-western-university/?fbclid=IwAR2mdghjc-3x6S2PyAIrjdyx6J0mUTDxXdT4FJCV5jPMkeMtgoZ8Gzq8gXo
Found this link, which I think corroborates the paper Wei Dai linked. Haven’t review it yet.
https://globalnews.ca/news/6815551/cough-chamber-physical-distancing-coronavirus-western-university/?fbclid=IwAR2mdghjc-3x6S2PyAIrjdyx6J0mUTDxXdT4FJCV5jPMkeMtgoZ8Gzq8gXo