In 2013, eight cases of Rocky Mountain spotted fever (RMSF) were reported in Iowa. American dog ticks are carriers of Rickettsia rickettsii, the bacteria that causes RMSF. The American dog tick is the most common species of tick in Iowa and can be found in every county in the state. The tick is most active late March through August. Iowa RMSF cases in 2013 had symptom onset dates from March to September. Cases ranged from ages 14 to 83, with a median age of 55. Four cases were female and four were male. Three of the eight cases were hospitalized.
For more detailed information and statistics on all notifiable diseases, please see our current annual report.