[Judith Anne]

Thanks for posting this interesting article. I've also read that about 33% of people are immune to syphillis...

[djf]

There is naturally in the tropics a non-genital form of syphilis. Children usually get it young, they get a fever and a rash, much like chicken pox, and after a week or so they're back to normal.

Once you get this form, you are forever immune to the deadly genital form.