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Apr 29, 2022 · Salmonella infection (salmonellosis) is a common bacterial disease that affects the intestinal tract. Salmonella bacteria typically live in animal and human intestines and are shed through stool (feces). Humans become infected most frequently through contaminated water or food. Some people with salmonella infection have no symptoms.
Aug 28, 2019 · Salmonella choleraesuis causes the majority of cases of salmonellosis in pigs. Salmonella typhimurium, the other major cause of porcine salmonellosis in the United States, accounts for 30% of swine outbreaks. Infections of pigs with other Salmonella serovars frequently occur but are only occasionally causes of disease outbreaks.
The genus Salmonella is divided into 2 species, S. enterica and S. bongori, which include > 2500 known serotypes.Some of these serotypes are named. In such cases, common usage sometimes shortens the scientific name to include only the genus and serotype; for example, S. enterica, subspecies enterica, serotype Typhi is shortened to Salmonella Typhi.
Key Points. Nontyphoidal Salmonella infections are common and result from direct and indirect contact with numerous species of infected animals, the foodstuffs derived from them, and their excreta. Clinical syndromes include gastroenteritis, enteric fever, and focal infections; bacteremia occasionally occurs.
Nov 25, 2016 · Salmonella enterica serovars Choleraesuis and Typhimurium are among the non-typhoid Salmonella serovars that are important zoonotic pathogens. In clinical observation, S. Typhimurium typically ...
Salmonella penetrate the intestinal epithelial cells but, unlike Shigella and invasive E. coli, do not escape the phagosome. Thus, the extent of intercellular spread and ulceration of the epithelium is minimal. Salmonella escape from the basal side of epithelial cells into the lamina propria. Systemic spread of the organisms can occur, giving ...
Salmonella enterica subspecies enterica has 2610 different serotypes; the most well known being serotypes Typhi, Paratyphi, Enteriditis, Typhimurium and Choleraesuis (1). The serotypes are characterized by three surface antigens: the flagellar “H” antigen, the oligosaccharide “O” antigen and the polysaccharide “Vi” antigen (found in ...
