Learning Objectives

• Differentiate the symptoms and aetiologies of food associated infection from food poisoning
• Be aware of the aetiologies and clinical significance of diarrhea verses dysentery
• Explain the mechanisms of pathogenesis of the common toxigenic bacteria of the GIT
• Correlate a clinical history with likely infectious cause
• Describe the epidemiology and transmission of parasitic infections of the GIT

GIT Infections

• how are GIT infections acquired?
• what are the host defences of the GIT?
• how are these defences breached?
• what are 4 groups of people at risk of GIT infections?
• what is gastroenteritis?
• what is diarrhoea vs dysentery?

Gastric & Duodenal Ulcers

• what infections does Helicobacter pylori cause?
• what test is used to detect H. pylori?
• what does it gram-stain?

Diarrhoea

• how does V. cholera produce diarrhoea?