If people die of infectious disease like cholera get buried in mass burials,

[tiffanyr0427]

can the disease still be spread? I read an artical on Hindostan Indiana ...a ghost town where 90% of the population died from a cholera epidemic in the 1800's. There was a mass burial sight there. There is a town legend of the treasurer who panicked and buried the towns money and then died from the plague. I just wondered if historians went around digging up the sight could the disease spread again? I wouldn't be out there because historians don't even know if it was cholera , some people believe it was yellow fever or something else!