Hmm, so under the base assumption, you’ve been exposed to 26% of the population. In other words, if geo and Matt live in the same city, there is a 26% chance they are some kind of eskimo buddies.
Apparently, the likelihood of me having contracted a disease with an aggresive view of my partners’ prior history is: (Chlamidia 1200%, Ghonorea 1700%, Syphilis 1400%, Trichommoniasis 1900%, Herpes 139%, HPV 97%, HIV 109%, Hepatitis B 124%)
Despite having tested clear. I’ve been indirectly exposed to 1% of the US population and 1000% of the population of Pittsburgh (where I lived for quite some time) despite not having been terribly active. Seems legit.
Although, if I take a slightly more naive view of my partners’ partners (cut by half) then the calculation changes drastically and seems more realistic (44%, 59%, 48%, 64%, 5%, 3%, 4%, 4%).
I think the issue is that it does not seem to account for one night stands or protection.
Well, it is true from what I read, that many STDs are more easily transmitted through buttsecks or from dick to vagina, than from vagina to dick. This is because there are more blood vessels to receive fluids in the cavity areas compared to on the dick. So, avoiding gay sex most likely does reduce risk of contracting STDs if you are male, even if 99% is an exaggeration.