"Does that point to Homosexual "marriage" as a cure, or even a control on infection rates......Doesn't look like it. "

I don't know of anyone on this Earth who thinks of Gay marriage as control on the spread of STDs. Those gays I know of who have married say it is an expression of love and commitment. I have no reason to doubt that they are being honest about that. I would expect them to be as sentimental as me and that is why I got married.

There are suggestions and rules of hygiene for all human interactions. If straight people are careful about sex, they greatly decrease the odds of getting sick. Same for gays. Statistics suggest that there are some groups of people who are less careful than others. There is no causal effect shown between that and marriage.