That video was extremely interesting and yet also just as horrible. When I think of the Victorian era, I think of the architect and the clothing and never about disease and poverty and now I must filter that into my thoughts, too.
The pauper's cemetery where the bodies were buried 8, 9, 10 deep is difficult for us to fathom, even though I believe most cemeteries have a section for that.
When I say that a sexually transmitted disease is a 'good' answer, I also have to say that that wasn't what I was thinking.
Azna has guessed the answer to my riddle even though I'd have to say that both of those answers would work.