1930s-era syphilis propaganda
Sometimes it’s easy to forget that up until around the last half of the twentieth century, it was not uncommon for people to just drop dead for whatever reason. Syphilis was one of those reasons, thus the following propaganda:
According to Wikipedia, the cures for syphilis were, in chronological order: eating mercury, deliberately contracting malaria, and then penicillin starting in 1928. Click the pic for more images.