I did a rough calculation of the likely number of positive cases from Sturgis (which, so far, appear to be pretty accurate). The crowd at the White House were similarly unmasked and undistanced, so likely spreaders. They were even more commingled.
In a crowd of 1500, it is likely that 2-3 were already infected and infectious, but not overtly symptomatic. It does not appear that they were tested. I don't know if they were screened. Assuming 3 were infectious, 7-12 people would likely have been exposed and contracted the disease at the event (I'd suspect more, as these people were particularly resistant to mandates, but I'm being conservative). By next week (the average incubation period), those 7-12 will have infected 18-48 more people. Realistically, by Labor Day, I'd expect there to be 60 infectious cases from the event. Of those, 12 will be symptomatic, 3 will be hospitalized and one or two will die. By the time contact tracing gets back to the event (if it ever does), the next iteration will have occurred. Another 150-240 people will have contracted COVID from the event participants and family/friends. 30-50 will be sickened, 6-10 will be hospitalized and 3-6 will have died. That's the way diseases spread.
These are conservative numbers on purpose. It is unlikely that participants will voluntarily allow information to get out, but, if, like Herman Cain, they are prominent Trumplicans, it won't stay under wraps. Before November at least one prominent supporter will likely have died from COVID contracted because of the event, and maybe more. It's just math... and SCIENCE!