Giardiasis is an infection of the small intestines caused by a parasite called Giardia lamblia. The infection is transmitted via intake of Giardia cysts. These cysts pass on to humans through several ways:
- Contaminated water- Drinking water that has been contaminated by human and animal excreta that contain Giardia cysts is the primary source of infection. Improper water filtration techniques increase the risk of giardiasis.
- Contaminated food- Eating raw or undercooked meat that has been contaminated with Giardia cysts, food that may have been washed in contaminated water, or is prepared by an infected person can transmit giardiasis.
- Direct person-to-person contact- Exposure to an infected family member, or other infected individuals at day care centers or nursing homes can transmit the infection. Poor sanitation and poor hygiene increases the spread of the protozoan.
- Unprotected anal sex
Giardia can cause diarrhea, abdominal cramps, abdominal bloating and nausea. Sometimes, giardiasis may not cause any symptoms.
The doctor usually recommends stool examination for diagnosing giardiasis.
Metronidazole is used effectively to treat giardiasis. It helps kill the parasite and also lowers the risk of transmission of giardiasis to others.
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Dr. Trupti Shirole. 2014. Giardiasis - Symptoms - Diagnosis - Treament - FAQs. Medindia, viewed Sep 22, 2023, https://www.medindia.net/patients/waterborne/giardiasis.htm.
Latest Publications and Research on Giardiasis
- ILEOCOLONIC LYMPHONODULAR HYPERPLASIA IN CHILDREN; RELATED WITH VARIETY OF ETIOLOGIES RANGING FROM FOOD HYPERSENSITIVITY TO FAMILIAL MEDITERRANEAN FEVER. - Published by PubMed
- Acceptance of the 2019 Stoll-Stunkard Memorial Lectureship Award: The Study of Host-Parasite Interactions to Better Understand Fundamental Host Physiology: The Model of Giardiasis. - Published by PubMed
- The mixed AII and BIII genotypes of human Giardia lamblia isolates circulating in Mazandaran Province, northern Iran. - Published by PubMed
- Report of Giardia assemblages and giardiasis in residents of Guilan province-Iran. - Published by PubMed
- Prevalence and molecular characterization of Cryptosporidium spp. and Giardia intestinalis in household dogs and cats from Shiraz, Southwestern Iran. - Published by PubMed
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