S. aureus, E. coli, P. auriginosa, Salmonella typhi, Shigella sonnei, Shigella flexneri, Vibrio cholera.
Shigella species are generally indole negative, except for Shigella flexneri, which can be indole positive depending on the specific strain. In laboratory identification, indole testing is used to differentiate between various enteric bacteria. Therefore, while most Shigella species do not produce indole, Shigella flexneri may show positive results under certain conditions.
shigella sp or shigella spp = shigella species
A simple test you can perform is the Citrate test, Serratia marcensens is Citrate positive while Shigella flexneriis citrate negative.Also Serratia Marcensens is motile and Shigella flexneri is non motile if you have already done a Hydrogen Sulfide test you would have been able to already determine between the two.Also Serratia marcensens is VP positive while Shigella flexneri is negative.Serratia marcensens is lipase positive and Shigella flexneri is lipase negativeAnother distinguishing characteristic is that Serratia marcensens grows a distinct red color pigmentation the Shigella flexneri does not have.(These are all according to Bergeys Manual of Systematic bacteriology)
Eubacteria is the Kingdom of shigella.
Shigella bacilli has evolved in with human being. So data from more than a million years is not available. John snow noticed in 1854 in England that Cholera was spread in area supplied by one common pipe line. There after sanitation improved and water born diseases disappeared in developed countries. Before that practically every person must have suffered from shigella infection leading to immunity or rarely death.
Shigella attacks all people especially weak children or infants.
The color of shigella in the DCA medium is straw or pink.
Several bacteria produce enterotoxins, including Staphylococcus aureus, Clostridium perfringens, Vibrio cholerae, and Escherichia coli. These enterotoxins can cause gastrointestinal illnesses, such as food poisoning and diarrhea, when ingested.
Dysentery is the disease name. The pathogen name is Shigella Dysenteriae.
Shigella infection spreads through food or water contaminated by human waste.
Four different groups of Shigella can affect humans.