I don’t. It’s a guess.
I’ve heard 90% before. I’ve heard monogamous in gay circles means 1 or 2 days where partners can have sex with anyone.
But I really don’t know.
For it to already have spread to 6000 people in the US, someone is having a lot of gay sex with multiple partners.
At first it primarily spread through homosexual sex parties or raves or fests, whatever they’re called.