*Rate per 100,000 population based on the U.S. Census Bureau’s population data as of July 1, 2002
Campylobacteriosis is a bacterial diarrheal disease usually transmitted through raw or undercooked foods of animal origin or foods cross-contaminated by animal food products or feces. It can also be transmitted by untreated or contaminated water or through person-to-person transmission via the fecal-oral route. In Indiana, the following risk factors are the most common: contact with pets (most commonly dogs and cats), chicken consumption within five days prior to illness, contact with someone with similar symptoms, travel outside of Indiana, contact with untreated water, and contact with livestock.
In 2002, there were 511 cases of campylobacteriosis reported in Indiana, indicating a rate of 8.3 cases per 100,000 population (Table 1). This mirrors the rate seen for 2001. Figure 1 shows reported cases by year for 1998-2002. Incidence of disease was greatest during the summer months. Figure 2 shows cases per month for 2002. As Figure 3 shows, age-specific rates were greatest for infants under the age of 1 year (35.3) followed by preschoolers aged 1-4 years (10.75) and adults aged 70-79 years (10.1). Males (8.9) were more likely to be reported than females (7.6), while two cases did not report gender data. The rate for whites (6.3) was higher than that for blacks (2.1) or other races (2.6); however, 149 cases (29%) did not report race data.
The incidence rates were highest among the following counties reporting five or more cases: Dearborn (31.7), DeKalb (29.6), Jay (23.1), Franklin (22.1), and Randolph (22.1). Figure 4 shows counties reporting five or more cases. There were no outbreaks of campylobacteriosis reported in Indiana in 2002.
You can learn more about campylobacteriosis by visiting the following Web site: