Atlas of foodborne infections
transmitted by contaminated food and water

Atlas of Patogens Contents Information sources Glossary Administration

Giardia

CZ: giardie, lamblie
EN: giardia

Occurrence:
Meat and Meat Products
Fish and Fish Products
Fruits and Vegetables
Water and Beverages


Category:
Parasites


Foodborne Disease:
Untitled document

In processing...
 


Description:
Untitled document

Untitled document

Untitled document

Untitled document

Untitled document

IN processing...Untitled document

Untitled document

Untitled document

Untitled document

Giardia intestinalis is a protozoan flagellate (Diplomonadida) that can live in the intestines of animals and people, it causes giardiasis. It is found in every region throughout the world and has become recognized as one of the most common causes of waterborne (and occasionally food-borne) illness. People get giardiasis by consuming food or water contaminated with G. duodenalis cysts (the infective stage of the organism); by putting anything into your mouth that has touched the stool of a person or animal with giardiasis.

Diarrhoea, abdominal cramps, and nausea are the most common symptoms. Some cases may be without symptoms. Symptoms will usually appear 1 to 2 weeks after ingestion of a G.duodenalis cyst. They may last 4 to 6 weeks in otherwise healthy persons, but there are cases of chronic illnesses lasting months or even years.

Giardiasis occurs throughout the population, although the prevalence is higher in children than adults. Chronic symptomatic giardiasis is more common in adults than children. Those at risk include persons working in child day-care,  international travellers (traveller’s diarrhoea), people who drink from untreated water supplies, persons with weakened immune systems.

Pictures:

Giardia
Source: Life cycle of genus Giardia
Giardia
Source: trofozoits and SEM microscopy
Giardia
Source: trophozoit in fecal smear
Giardia
Source: trophozoits in feces

<<< Back