"Herd immunity" applies to bacterial infections as it does to viral. It does not apply to Syphilis. Getting an infection today does not prevent me from getting

"Herd immunity" applies to bacterial infections as it does to viral. It does not apply to Syphilis. Getting an infection today does not prevent me from getting one next month. Even if it did, it doesn't materially affect the rate at which other people get it from me...unless we are rutting like rabbits in some constant random orgy.