Yersinia pestis

Pneumonic plague (Untreated - 100%, Treated - 50%); Bubonic plague (Untreated - 50%-90%, Treated - 10%-20%); Septicemic plague - 20%-25% (Medscape)

Microbial Group

Vibrio cholerae

Average case fatality rates for Europe and the Americas continue to hover around 1% (Medscape)

Microbial Group

Shigella flexneri

This bacterium causes shigellosis, with shigella sonnei. It causes diarrhea and dysentery in humans. It can also cause symptoms of fever and stomach cramps. 

Microbial Group

Salmonella typhi

Salmonella typhi causes typhoid fever. It causes symptoms of fever, severe headaches, nausea, and loss of appetite. Other characteristics that can arise are: diarrhea, enlargement of the spleen, and the possible enlargement of the spleen.

Microbial Group