Amoebiasis is a disease caused by Entamoeba histolytica, prevalent in developing countries with poor sanitation, and endemic in Libya. It can lead to dysentery and serious conditions like hepatic abscesses, with transmission occurring through contaminated food and water. Prevention strategies include proper sanitation, safe drinking water, and health education.

1. Amoebiasis
Dr Paul T Francis, MD
Community Medicine
College of Medicine, Zawia

2. Amoebiasis
 Is a disease caused by Entamoeba
hystolytica
 It is seen worldwide especially in developing
countries with poor sanitation and hygiene
 Amoebiasis is endemic in Libya

3. Entamoeba histolytica

4. Entamoeba histolytica

5. Epidemiological features
 Agent
 E. histolytica
 Reservoir of infection – Man (cases and carriers)
 Host factors
 Can occur in any age
 Period of communicability – as long as cysts are
excreted
 Environmental factors – common in areas with poor
sanitation

6. Epidemiologic features
 Mode of transmission
 Direct – contaminated fingers
 Indirect – contaminated vegetables, water, flies
etc.
 Incubation period
 3-4 weeks

7. Clinical features
 It causes dysentery
 Diarrhea with blood and mucous
 Hepatic (Liver) abscess
 Is a very serious condition and can cause death of
patient

8. A ruptured amoebic liver abscess

9. Prevention and control
 Primary prevention
 Sanitary disposal of human excreta
 Safe drinking water supply
 Protection of food from flies
 Screening of food handlers
 Health education
 Secondary prevention
 Early diagnosis and treatment