Flashcards
HPA - Giardia Lamblia
Cards in this deck (10)
- 1What is it?Flagellated protazoic parasite that colonises and reproduces in the small intestine causing giardiasis (sometimes known as traveller’s diarrhea)
- 2Incidence20,000 cases reported each year in USA
High incidence in developing countries - 3ReservoirUntreated sewage
Contaminated foods/drinks
Can also be found on surfaces, soil, food, or water that has been contaminated with feces from infected humans or animals.
Fecal-oral transmission in infected individuals with poor hygiene practices - 4Portal of exitContaminated food/drink
Contaminated swimming holes
Faeces - 5Mode of transmissionContact with untreated sewage, infected individuals with poor hygiene practices
Ingesting contaminated food or drink
Contact of contaminated surfaces or animals - 6Portal of entryOral ingestion of microbial cysts
- 7Susceptible hostsAnyone who ingests microbial cysts is at risk
- 8PathogenesisIndividual unsuspectingly consumes microbial cyst of giardia lamblia in food or through poor hygiene.
Once ingested the protozoa emerges in an active state of feeding and motility. They use their sucking disks to attach themselves to the columnar epithelial cells - main food source is glucose. Some individuals (10%) do not experience any symptoms. When symptoms occur they may include diarrhoea, abdominal pain, and weight loss. Once the feeding stage is finished, the parasite reproduces using binary fission, and then passes through the digestive tract to end up in the faeces. - 9Breaking the cyclePracticing good hygiene
Effective sanitation and waste disposal
Safe food and drink handling processes
Identifying and treating infected individuals
Sterilising contaminated surfaces
Avoiding possibly contaminated waterways - 10Drug therapyNitroimidazoles are first-line therapy for giardiasis. Tinidazole can be offered as a single dose and has an efficacy of 90% to 98% (Antibiotics).
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- User has deleted their subject information Flashcards on HPA - Giardia Lamblia , created by Deleted user on 10/06/2018.
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- Created by Em J · Jun 9, 2018
- Copied by Em J · Jun 10, 2018
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