If you think you have a giardia infection, see your family doctor for testing, advice and treatment.
Giardia is passed in the feces; therefore, people with diarrhea which may be due to infection should not go to work or school. Giardiasis spreads easily in day care settings. If you are a food handler or health care worker it is possible for you to transmit giardia to others while carrying out your duties in these settings.
Do not work while you have diarrhea or vomiting and do not return to work until 48 hours after your last loose stool or episode of vomiting. This time period will ensure you have a chance to recover and lessen the possibility of transmitting the infection to others.
Children in day care who have diarrhea can be cared for temporarily in an area separate from other children until picked up by their parents. Children cannot return to day care until 48 hours after their last loose stool or episode of vomiting. To ensure proper hand washing, children in day cares should be supervised by an adult when washing their hands.
If you recover without treatment, you may excrete giardia in your stools for several months and possibly infect others. After using the toilet and before eating or preparing foods wash your hands thoroughly with liquid soap and water.