Roadside Mural: Don't Eat Raw Foods

This roadside wall mural near Neiwan reads "Don't eat raw foods. Prevent dysentery." (勿吃生食 預防痢疾) In the middle is a painting of a woman in aboriginal dress with face tattoos. She is holding a fish in one hand and some red meat in the other hand. In her body, mischievous bacteria are running wild.

Warning against eating raw foods seems like overkill to me. I don't know why the sign didn't just warn against eating raw meat.