Isotopes of cesium collect in muscles, strontium collects in bones, and other isotopes also accumulate in tissues, making escape from radiation impossible. People who live there will be eating contaminated food and water so their internal exposures will be beyond background levels and cumulative.
Counting background levels is only part of the story.
What sort of music do you like? sadelye meet and sex The Atomic Energy Agency is not a medical organization, it is an advocate for the nuclear industry.