In Florida (and to a lesser extent here in NJ), Ballys is known as a “gay” gym. You won’t likely catch TB from the Mariposas/Putos at the Ballys on Lincoln Road in South Beach, although you may catch something else...
Here in SoCal, gyms are filled with ethnic illegals from all over the globe. It drives my wife nuts when they don’t read signs on health, spitting, diving, nose spurts yep, nose spurts in the pool. We left Ballys to go to 24 Hour because of the filth in the gym and the fact that nobody spoke English anymore. Who knows how many germs are being spread or as you noted, with the huge gay population here in Long Beach, what else is being spread?!