You're welcome. The quick reply was just from the coincidence that I was attending to the forum when your question arrived.
Dear Dr. HHH,
I just want to express my deepest gratefulness for your profound answer in that amazing short time! Just great (no answer expected)!
Best,
N.
I understood that. It doesn't change my opinion or advice.
Welcome to the STD forum.
You can pretty much ignore the "some sites" that describe hand-genital contact as risks for the STDs you mention. There might be theoretical risk, but in 30+ years in the STD business and working in a busy STD clinic, I have never seen such a case. Many websites and health agencies take conservative stances -- if there is a theoretical risk, they err on the side of caution. (In the US, this is often driven by legal advice, given the litigious nature of our society.) But it truly isn't an issue. Definitely stay away from websites that are not professionally run and/or moderated. The greatest misinformation will likely be found on sites dominated by people with personal testimony. But most people who claim hand-genital transmission are either just plain lying, or don't really know when they were infected, or simply forgot about other plausible exposures.
Having said all that, there might be real risk for HPV. However, even that is very low. And since almost all sexually active people are exposed to and infected by genital HPV, if that ever shows up in your wife (e.g., an abnormal pap smear) there will be no reason to believe it resulted from any sexual indiscretion on your part.
Bottom line: No worries. From a disease standpoint, you do not need testing and defintely do not need to say anything to your wife. Discussing or not discussing your practices with her is purely a relationship issue, not one of health.
I hope this helps. Best wishes-- HHH, MD
I meant to add that my concern is that a basically very low risk is multiplied by the numerous contacts.
Thank you!