S. choleraesuis

Salmonella choleraesuis is a rod-shaped, flagellate, facultative aerobic, Gram-negative bacterium and a species of the genus Salmonella. A number of its serovars are serious human pathogens. Most cases of salmonellosis are caused by food infected with S. enterica, which often infects cattle and poultry, though other animals such as domestic cats and hamsters have also been shown to be sources of infection in humans. Salmonella choleraesuis is possibly the cause of cocoliztli, an epidemic in 16th-century New Spain. Secreted proteins are of major importance for the pathogenesis of infectious diseases caused by Salmonella choleraesuis. A remarkably large number of fimbrial and nonfimbrial adhesins are present in Salmonella, and mediate biofilm formation and contact to host cells. Secreted proteins are also involved in host-cell invasion and intracellular proliferation, two hallmarks of Salmonella pathogenesis.