A few days ago, I read a paper that stated that droplets evaporated by 95% in less than a second (I want to say 1/24 of a second) in a room at 50% humidity.
Clearly, ambient temperature and humidity are going to affect evaporation and virus survival rates.
Another paper said that viruses do not survive very long on the hands, I think it was only a few seconds.
I have read many papers, but unfortunately forget to bookmark them. I will look for the paper that discusses the evaporation rates and post a link if I find it.
Yesterday, I found three papers in which the efficacy of face masks in the context of Covid-19 was evaluated. Yep, the data actually shows that face masks, as well as social distancing and eye protection, work to reduce spread of Covid-19. The blog excerpted at the top of this thread was written by a physicist who has zero experience in infectious diseases. Two of the studies of mask efficacy were written by people in the field (MDs, PhDs, MPHs, MSs); the other was written by economists and statisticians but their references appear to be valid. I did bookmark these papers.
I have seen similar reports on droplets holding covid. I don’t have the time to find them again. Thanks for your good info.