Chart showing yearly cases of whooping cough in Montana 20012 to 2012. Chart prepared by Charles Simmins. Click for a larger image.
Montana is one of the least populated states but it is battling an outbreak of whooping cough as great as many of its more heavily populated sister states. Through May 30, 2012, Montana has seen 252 pertussis cases for the year. The Centers for Disease Control data for 2012 through May 26 reports 242 cases.
Fifteen cases of whooping cough have been diagnosed in infants. Four required hospitalization. Forty-five percent of all pertussis cases in Montana to date have been in children age 10 and under. Only eighteen percent of the illnesses have been in adults.