I'm (genuinely--I don't know enough to pretend this is a knock-down argument) curious how this characterization of "crowd" illnesses fits with reports that Covid was extensively circulating in deer (not known for congregating in indoor spaces with poor ventilation). https://www.unmc.edu/healthsecurity/transmission/2023/08/29/...
If its surviving in deer longer than it would in a human, then all calculus about the virus is different either way. There wouldn't be a need to conform that data to this observation.
