Volume 24, Number 8—August 2018
CME ACTIVITY - Synopsis
Epidemiology of Diphyllobothrium nihonkaiense Diphyllobothriasis, Japan, 2001–2016
Figure 4

Figure 4. Geographic distribution of patients infected with Diphyllobothrium nihonkaiense tapeworm, by administrative region, Japan, 2001–2016. Thick lines indicate divisions between the 8 regions of Japan (Hokkaido, Tohoku, Kanto, Chubu, Kinki, Chugoku, Shikoku, and Kyushu and Okinawa). The total numbers of egg and proglottid samples and percentage of D. nihonkaiense infections are given per region. The percentages do not add up to 100% because of rounding. The numbers of egg/proglottid samples are given per prefecture. The prefectures of 13 (1.6%) of 825 patients were unknown; these patients were, therefore, not included. Inset map shows location of Japan in East Asia.
1Retired.