Cryptosporidiosis There were 310 cryptosporidiosis cases notified in 2014, which was the fourth most common notifiable enteric disease. The notification rate (12.2 cases per 100 000 population) was consistent with the mean of the previous five years (11.5 cases per 100 000 population) (Appendix 1). In each of the years from 2009 to 2014 cryptosporidiosis case numbers were higher in the late summer through to autumn (Figure 13). An increase in cases in November was due, in part, to a swimming pool associated outbreak of Cryptosporidium (see section 5.2). Figure 13. Number of cases of cryptosporidiosis by year and month of onset, WA, 2009 to 2014 The cryptosporidiosis notification rate was 20% higher in females than males in 2014 (13.4 and 11.1 per 100 000 population, respectively). The <1- 4 years age group had the highest notification rate (66 per 100 000 population), and accounted for 37% of all cryptosporidiosis notifications (Figure 14). The overall notification rate for the Aboriginal population was 4.5 times the rate for the non-Aboriginal population (46.7 and 10.4 cases per 100 000 population, respectively). The region had the highest notification rate (64 cases per 100 000 population), and the Great Southern region the lowest notification rate (10 cases per 100 000 population) (Figure 15). Of those cryptosporidiosis cases with known place of acquisition, most (87%) people acquire their illness in WA with 12% of people acquiring their illness overseas. Figure 14. Age-specific notification rates for cryptosporidiosis by sex, WA, 2014 Figure 15. Cryptosporidiosis notification rates by region and Aboriginality, WA, 2014
Cryptosporidiosis There were 310 cryptosporidiosis cases notified in 2014, which was the fourth most common notifiable enteric disease. The notification rate (12.2 cases per 100 000 population) was consistent with the mean of the previous five years (11.5 cases per 100 000 population) (Appendix 1). In each of the years from 2009 to 2014 cryptosporidiosis case numbers were higher in the late summer through to autumn (Figure 13). An increase in cases in November was due, in part, to a swimming pool associated outbreak of Cryptosporidium (see section 5.2). Figure 13. Number of cases of cryptosporidiosis by year and month of onset, WA, 2009 to 2014 The cryptosporidiosis notification rate was 20% higher in females than males in 2014 (13.4 and 11.1 per 100 000 population, respectively). The <1- 4 years age group had the highest notification rate (66 per 100 000 population), and accounted for 37% of all cryptosporidiosis notifications (Figure 14). The overall notification rate for the Aboriginal population was 4.5 times the rate for the non-Aboriginal population (46.7 and 10.4 cases per 100 000 population, respectively). The region had the highest notification rate (64 cases per 100 000 population), and the Great Southern region the lowest notification rate (10 cases per 100 000 population) (Figure 15). Of those cryptosporidiosis cases with known place of acquisition, most (87%) people acquire their illness in WA with 12% of people acquiring their illness overseas. Figure 14. Age-specific notification rates for cryptosporidiosis by sex, WA, 2014 Figure 15. Cryptosporidiosis notification rates by region and Aboriginality, WA, 2014
wa_ozfoodnet_annual-report_2014.docx