Salmonella

Salmonella is a genus of Gram-negative bacteria that includes intestinal pathogens transmitted through contaminated food, water, and contact with infected animals.

Salmonellosis: An infection caused by Salmonella bacteria, ranging from gastroenteritis to invasive disease. This is the illness produced when pathogenic Salmonella infects a person.
Foodborne illness: Disease caused by consuming food contaminated with infectious organisms or harmful substances. Salmonella is a major bacterial cause of foodborne illness.
Bacteria: A domain of single-celled organisms whose cells lack a membrane-bound nucleus. Salmonella belongs to this broad group of microorganisms.
Shigella: A genus of Gram-negative bacteria that causes bacillary dysentery and spreads chiefly between people. Shigella can cause similar intestinal symptoms but differs in transmission and bacterial classification.
Salmonella pathogenicity island 1: A chromosomal region encoding a secretion system and proteins that help Salmonella invade intestinal cells. Its invasion machinery helps initiate intestinal infection.
Salmonella enterica subsp. enterica serovar Enteritidis: A Salmonella serovar commonly associated with poultry, eggs, and human foodborne illness. It is a prominent food-associated serovar within the genus.
Enterobacterales: An order of Gram-negative bacteria that includes many intestinal and environmental species. Salmonella is classified within this bacterial order.
Campylobacter: A genus of bacteria, including Campylobacter jejuni, that commonly causes foodborne gastroenteritis. It is another frequent bacterial cause of foodborne diarrhea, with different biology and reservoirs.
Type III secretion system: A protein-delivery apparatus that injects bacterial proteins into host cells. Salmonella uses this apparatus to alter host cells during invasion.
Salmonella enterica subsp. enterica serovar Typhimurium: A widely distributed Salmonella serovar that infects humans and many animal species. It exemplifies the broad host range found among foodborne strains.

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