Giardiasis (say "jee-ar-DYE-uh-sus") is an infection of the intestines caused by the parasite Giardia lamblia. The illness is also called giardia (say "jee-AR-dee-uh").
This illness can cause diarrhea, stomach cramps, gas, and nausea. Your child may feel sick for a wfew weeks and then get better. Or the symptoms may come and go for some time. Sometimes there are no symptoms.
Your child may become infected if he or she eats food or drinks water that has human or animal waste in it. In Canada and the United States, a child can get it by drinking untreated water from wells, streams, rivers, and lakes. Your child also can get sick from having close contact with someone who is infected with giardia, such as workers in a daycare centre.
Follow-up care is a key part of your child's treatment and safety. Be sure to make and go to all appointments, and
call your doctor or nurse call line if your child is having problems. It's also a good idea to
know your child's test results and keep a list of the medicines your child
Call your doctor or nurse call line now or seek immediate
medical care if:
Watch closely for changes in your child's health, and be sure to
contact your doctor or nurse call line if:
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Current as of:
May 24, 2016
John Pope, MD - Pediatrics
& Adam Husney, MD - Family Medicine & E. Gregory Thompson, MD - Internal Medicine & Thomas Emmett Francoeur, MD, MDCM, CSPQ, FRCPC - Pediatrics
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