Campylobacteriosis Campylobacteriosis was the most commonly notified enteric infection in 2014 with 2962 notifications and a rate of 117 per 100 000 population. This notification rate was 50% higher than the 2012 rate, and 25% higher than the previous five years average (Appendix 1 and Figure 1). In 2014, the campylobacteriosis notification rate for males was higher than for females (128 and 105 per 100 000 population, respectively), and gender difference was more pronounced in 2014 compared to the previous five years (Figure 2). The age group with the highest notification rate was the 75-79 years group (204 per 100 000 population), followed by the <1-4 years group (176 per 100 000 population). Notification rates decreased in age groups older than the <1-4 years group but peaked again in the 20-24 age group (143 per 100 000 population). Rates then progressively increased from the 55-59 year age group onwards driven partly by higher notifications in males (Figure 3). The notification rate for non-Aboriginal people was 84% higher than the rate for Aboriginal people (107 and 58 per 100 000 population, respectively), which also differs from most other enteric infections, as generally notification rates are higher for Aboriginal people. The 2014 notification rate for campylobacteriosis was highest in the South West region (147 per 100 000 population) followed by the Great Southern region (136 per 100 000 population). The region with the lowest rate was the Pilbara (66 per 100 000 population). Of those campylobacteriosis cases with known place of acquisition, most (74%) people acquired their illness in WA with 24% of people acquiring their illness overseas. Figure 1. Number of cases of campylobacteriosis by year and month of onset, WA, 2009 to 2014. Figure 2. Campylobacteriosis notification rates by sex, WA, 2009 to 2014 Figure 3: Age-specific notification rates for campylobacteriosis by sex, WA, 2014
Campylobacteriosis Campylobacteriosis was the most commonly notified enteric infection in 2014 with 2962 notifications and a rate of 117 per 100 000 population. This notification rate was 50% higher than the 2012 rate, and 25% higher than the previous five years average (Appendix 1 and Figure 1). In 2014, the campylobacteriosis notification rate for males was higher than for females (128 and 105 per 100 000 population, respectively), and gender difference was more pronounced in 2014 compared to the previous five years (Figure 2). The age group with the highest notification rate was the 75-79 years group (204 per 100 000 population), followed by the <1-4 years group (176 per 100 000 population). Notification rates decreased in age groups older than the <1-4 years group but peaked again in the 20-24 age group (143 per 100 000 population). Rates then progressively increased from the 55-59 year age group onwards driven partly by higher notifications in males (Figure 3). The notification rate for non-Aboriginal people was 84% higher than the rate for Aboriginal people (107 and 58 per 100 000 population, respectively), which also differs from most other enteric infections, as generally notification rates are higher for Aboriginal people. The 2014 notification rate for campylobacteriosis was highest in the South West region (147 per 100 000 population) followed by the Great Southern region (136 per 100 000 population). The region with the lowest rate was the Pilbara (66 per 100 000 population). Of those campylobacteriosis cases with known place of acquisition, most (74%) people acquired their illness in WA with 24% of people acquiring their illness overseas. Figure 1. Number of cases of campylobacteriosis by year and month of onset, WA, 2009 to 2014. Figure 2. Campylobacteriosis notification rates by sex, WA, 2009 to 2014 Figure 3: Age-specific notification rates for campylobacteriosis by sex, WA, 2014