Bacteria and protozoans that are amenable to treatment include "Shigella" "Salmonella typhi", and "Giardia" species. It is often used to differentiate enteric bacteria including "Salmonella" and "Shigella". Hence, "Shigella" cells may cause dysentery. More than three hundred complete genomic sequences of "Escherichia" and "Shigella" species are known. Peptone metabolism by "Shigella" and "Salmonella" alkalises the medium, turning a pH indicator blue. This bacterium is gram-negative, non-spore forming "Shigella" from serogroup B. Each of the "Shigella" genomes includes a virulence plasmid that encodes conserved primary virulence determinants. Shigellosis is an infection of the intestines caused by "Shigella" bacteria. However, some bacteria are developing antibiotic resistance, particularly "Shigella". Elastase also has the important immunological role of breaking down Shigella virulence factors. Shigella dysenteriae is a species of the rod-shaped bacterial genus "Shigella". The festival was hampered by an outbreak of shigella in 1988. Shigellosis is caused by one of several types of "Shigella" bacteria. "Shigella" infection is typically by ingestion. He died of pneumonia complicated by shigella the following day at the age of 39.