This card describes Salmonella as a Gram-negative, motile, H2S-producing bacterium transmitted via poultry and undercooked meat. Virulence factors include endotoxin and the Vi capsule. It causes Typhoid Fever, characterized by fever, rose spots, constipation, and abdominal pain. Treatment involves ceftriaxone or fluoroquinolones, and vaccines are available.
Salmonella es una bacteria Gram-negativa que produce H2S y es móvil. Se transmite a través de aves de corral y carne poco cocida. Sus factores de virulencia incluyen endotoxina y la cápsula Vi. Salmonelosis puede causar fiebre tifoidea, que presenta fiebre, manchas rosas, estreñimiento y dolor abdominal. El tratamiento con ceftriaxona o fluoroquinolona es efectivo, y existe una vacuna oral (cepa viva atenuada) o IM (polisacárido capsular Vi).
| Front | Salmonella Main features Sources Virulence Factors Mechanism Manifestations Treatment Vaccine |
|---|---|
| Back | Oxidase (-) Lactose (-) Flagellar organism which swims H2S production Sources: Poultry Uncooked meat ↓ Mechanism ↓ Invade GI tract via M cells of Peyer patches Virulence Factors ↓ Endotoxin | Vi capsule Manifestations: ↓ Typhoid Fever → Fever | Rose spots on abdomen | Constipation | Abdominal pain | GI ulceration | Hemorrhage) Treatment ↓ Ceftriaxone | Fluoroquinolone Vaccine ↓ Oral vaccine (Live attenuated S.typhi) IM vaccine contains Vi capsular polysaccharide ↓ |
Tags: microbiology
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