Giardiasis is one of the leading waterborne diseases. It typically peaks in late summer or early fall. In 2012, there were 251 cases in Iowa. Diapered children and those in childcare are most likely to become infected with giardia. Twenty-three percent of cases were ages of five and under. There were 8.2 cases for every 100,000 Iowans compared to 8.9/100,000 in the previous year.
For more detailed information and statistics on all notifiable diseases, please see our current annual report.