The food items with levels exceeding 100 becquerels per kilogram of cesium were found in Fukushima, Iwate, Miyagi, Yamagata, Ibaraki, Tochigi, Gunma and Chiba prefectures in the survey conducted through March 21, according to the Ministry of Health, Labor and Welfare.
Of the 421 cases, about 80 percent involved seafood and river fishes, and the remainder involved shiitake mushrooms and the meat of wild animals such as boars and birds.
Almost all cases involving vegetables related to shiitake mushrooms. Read More