In 2013, 342 cases of Shigella were reported in Iowa, an approximately 522 percent increase over the average number of cases for the past three years. The majority of cases were associated with a community-wide outbreak in western Iowa beginning in September and lasting through the end of the year. Of the outbreak cases, 63 percent were under the age of 10 and approximately 21 percent were in persons aged 20 to 49 years. This reflects that children and their parents or caretakers are at most risk of infection.
For more detailed information and statistics on all notifiable diseases, please see our current annual report.