 
<prompt> Male Circumcision by Region | Percent of men age 15-49 who are circumcised | (Tanzania, 0.72) (Kagera, 0.39) (Mara , 0.88) (Simiyu, 0.3) (Mwanza, 0.64) (Geita, 0.41) (Shinyanga, 0.32) (Tabora, 0.56) (Kigoma, 0.77) (Katavi , 0.44) (Rukwa, 0.28) (Mbeya , 0.38) (Singida , 0.88) (Dodoma , 0.95) (Manyara , 0.92) (Arusha , 0.91) (Kilimanjaro , 0.97) (Tanga , 0.99) (Morogoro , 0.88) (Pwani , 0.98) (Iringa , 0.6) (Njombe , 0.49) (Lindi , 0.99) (Ruvuma , 0.78) (Mtwara, >99%) (Pemba, >99%) (Unguja, >99%) (Dar es Salaam, 0.99) <response> The prevalence of male circumcision is lowest in Rukwa (28%), Simiyu (30%), and Shinyanga (32%). In contrast, male circumcision in Zanzibar, Dar es Salaam, Mtwara, Tanga, Lindi, and Pwani regions is almost universal.  