Salmonella


Also found in: Dictionary, Thesaurus, Medical, Financial, Wikipedia.

Salmonella

[‚sal·mə′nel·ə]
(microbiology)
A genus of gram-negative, facultatively anaerobic bacteria belonging to the family Enterobacteriaceae that cause enteric infections with or without blood invasion. Most species are motile, utilize citrate, decarboxylate ornithine, form gas from glucose, and produce hydrogen sulfide. Salmonellae do not ferment lactose, produce indole, or split urea; the Voges-Proskauer reaction is negative.

Salmonella

 

a genus of nonsporogenous rod-shaped bacteria that are 1–7 μm long and approximately 0.3–0.7 μm wide. It includes gram-negative facultative aerobes, most of which are motile because they are peritrichous. Salmonella was named in honor of the American pathologist D. E. Salmon (1850–1914).

Salmonellas form round grayish white colonies on solid nutrient mediums and an opacity and sediment and sometimes a film when grown in broth. They ferment carbohydrates, including glucose, mannose, xylose, and dextrin, and alcohols, including inositol and dulcite; an acid and sometimes a gas are formed as well.

Salmonellas generally inhabit the intestine of animals and man. Most belong to pathogenic species that produce various antigens, including the thermolabile flagellate H antigen and the O and V antigens, which consist of carbohydrates. There are more than 20 species in the genus, with more than 1,200 serotypes that differ in antigenic structure and biochemical properties. Among salmonellas are the causative agents of typhoid fever and paratyphoid in humans and salmonelloses in humans and animals.

A. A. IMSHENETSKII

References in periodicals archive ?
Salmonella Enteritidis alberga en su genoma un plasmido unico de virulencia de 60 kb (Chu et al.
The aim of this study was to evaluate the rapid detection test to identify salmonellosis using the PCR technique for the detection of ompC gene of Salmonella genus, and to compare the PCR with traditional isolation and characterization methods currently used in diagnostic laboratories.
Salmonella food poisoning is treated with antibiotic drugs only if the infection has spread into the bloodstream.
The procedures for isolation and identification of Salmonella, were carried out through pre-enrichment of 25 g samples by homogenization with 225 mL lactose broth ([10.
At the time of the first petition, FSIS requested additional evidence to support CSPI's claim that the four strains of ABR salmonella meet the legal definition of "adulterant" under the Federal Meat Inspection Act and the Poultry Products Inspection Act.
Like other microorganisms, increasing drug resistance is a challenge in treating Salmonella infection.
Conclusion: The sensitivit y of salmonella species was ver y low to the f irst line agents such as amoxicillin chloramphenicol and co-trimaxazole.
html) map indicates that California has the most people affected so far by the kratom contamination, with three salmonella patients.
Conclusion: This is the first study of its kind in Iran to determine the sequence types of the clinical isolates of Salmonella Typhimurium in Tehran hospitals using MLST.
We used FoodNet data to compare demographics, clinical outcomes, and travel history among patients infected with Salmonella Dublin and those infected with other Salmonella serotypes.
That's probably the biggest hurdle in trying to develop Salmonella vaccines," says Shawn Bearson, a microbiologist in ARS's Food Safety and Enteric Pathogens Research Unit in Ames.
Indeed, Salmonella food contamination presents a significant impact as result of the lost productivity and costs for public health [21,23].