Illness is associated with eating contaminated food, particularly undercooked poultry, milk or water. The incidence is seasonal, peaking in the summer months. The pathogenesis of Campylobacter infection involves invasion of the intestinal mucosa at points from the jejunum to the distal colon. An inflammatory response occurs at the site of invasion, along with ulceration and possible micro-abscess formation. Salmonella There are more than 2,000 serotypes of Salmonella, many of which have been implicated in food-borne disease in humans.
Illness is associated with eating contaminated food products, predominantly poultry and eggs.
There have, however, been famous outbreaks of food poisoning associated with unusual foods such as S napoli in chocolate, S typhimurium 124 in pepperami and S goldcoast in cheese. The incidence of salmonellosis is seasonal, peaking in late summer. The pathogenic mechanism involves the bacteria entering into enterocytes. Neutrophil infiltration of the mucosa occurs, the release of local and systemic inflammatory mediators promoting fluid secretion into the gut. Illness is characterised by diarrhoea, vomiting and fever.