Diseases, Conditions, Syndromes

Recognize symptoms of salmonella infection

It's the season of summer picnics and barbecues. Make sure your family gathering doesn't end up with a bout of food poisoning. More than 1 million Americans each year become sick with salmonella infection. Most people get ...

Diseases, Conditions, Syndromes

CDC: Live poultry linked to Salmonella cases in 28 states

(HealthDay)—Live poultry, such as chicks and ducklings, in backyard flocks have caused Salmonella infections that have sickened 97 people in 28 states, the U.S. Centers for Disease Control and Prevention said Wednesday.

Diseases, Conditions, Syndromes

Incidence of enteric infections due to pathogens up or stable

(HealthDay)—In 2019, the incidence of enteric infections caused by eight pathogens increased or remained stable, according to a study published May 1 in the U.S. Centers for Disease Control and Prevention (CDC) Morbidity ...

Medical research

Study finds key mechanism for how typhoid bacteria infects

A new study has uncovered key details for how the Salmonella bacteria that causes typhoid fever identifies a host's immune cells and delivers toxins that disrupt the immune system and allow the pathogen to spread.

Immunology

Salmonella—how the body fights back

New research from the University of East Anglia shows how the human body powers its emergency response to salmonella infection.

Diseases, Conditions, Syndromes

Organic chicken less likely to harbor a dangerous 'superbug'

(HealthDay)— In a finding that suggests organic is best, a new study indicates that chickens raised without antibiotics may have fewer types of antibiotic-resistant salmonella than animals raised at factory farms.

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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.

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