Study reveals how some bacterial infections become chronic

In the early 1900s, a cook named Mary Mallon, better known as "Typhoid Mary," spread Salmonella Typhi, the causative agent of typhoid fever, to dozens of her patrons even though she showed no symptoms. Many people today harbor ...

Salmonella outbreak brings CDC warning over small turtles

Public health officials are currently investigating a multi-state outbreak of Salmonella, a bacterial disease that causes diarrhea, fever and stomach cramps. According to an August 2023 investigation notice by the Atlanta-based ...

Scientists engineer living DNA sensors

Early detection of infectious diseases can be key to successful treatment, but we often don't know we are infected until symptoms appear. What if our bodies could detect the presence of an infectious pathogen before the onset ...

Female scent found to accelerate growth in juvenile male mice

Exposing female house mice (Mus musculus) to the scent of male urine is known to accelerate their sexual development in what scientists call the Vandenbergh effect. A study recently published in Scientific Reports led by ...

page 1 from 22

Salmonella

S. bongori S. enterica

Salmonella is a genus of rod-shaped, Gram-negative, non-spore forming, predominantly motile enterobacteria with diameters around 0.7 to 1.5 µm, lengths from 2 to 5 µm, and flagella which project in all directions (i.e. peritrichous). They are chemoorganotrophs, obtaining their energy from oxidation and reduction reactions using organic sources and are facultative anaerobes; most species produce hydrogen sulfide, which can readily be detected by growing them on media containing ferrous sulfate, such as TSI. Most isolates exist in two phases; phase I is the motile phase and phase II the non-motile phase. Cultures that are non-motile upon primary culture may be swithched to the motile phase using a Craigie tube.

Salmonella are closely related to the Escherichia genus and are found worldwide in warm- and cold-blooded animals, in humans, and in nonliving habitats. They cause illnesses in humans and many animals, such as typhoid fever, paratyphoid fever, and the foodborne illness salmonellosis.

Salmonella is named for pathologist D.E. Salmon.

This text uses material from Wikipedia, licensed under CC BY-SA