Distribution of Eosinophilic Meningitis Cases Attributable to Angiostrongylus cantonensis, Hawaii
Figure 2. Incidence rates for cases of eosinophilic meningitis attributed to Angiostrongylus cantonensis infection, by period, Hawaii, January 2001–February 2005 (n = 24). The number over each bar indicates the number of cases during the period. The incidence rates (per 100,000 person-years) for the entire 50-month study period, the 46-month baseline period (January 2001–October 2004), and the 4-month cluster period were 0.5, 0.3, and 2.1, respectively.