The kind of crowd matters. 1000 people attending an indoor concert is a massively more effective spreader of COVID than 1000 people marching outdoors at a prote

The kind of crowd matters. 1000 people attending an indoor concert is a massively more effective spreader of COVID than 1000 people marching outdoors at a protest. The chances of getting infected from someone nearby who is spreading the virus depends on how much of the virus got in you which is a function of how long you are near to them, the rate they are expelling viruses, and how long those viruses stay around you. In a crowd all of those factors depend heavily on what the crowd is doing and where they are doing it and what percent of the crowd is infected. I remember seeing papers that looked at the actual results of various large crowds and found that the George Floyd protests in fact did very little to spread COVID.