45% of kids in Fukushima survey had thyroid exposure to radiation — Up to 50 millisieverts per year equivalent for 1-year-old

Published: July 5th, 2011 at 8:06 am ET
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45% of kids in Fukushima survey had thyroid exposure to radiation, Kyodo, July 5, 2011:

Around 45 percent of children in Fukushima Prefecture surveyed by the local and central governments in late March experienced thyroid exposure to radiation, although in all cases in trace amounts that did not warrant further examination, officials of the Nuclear Safety Commission said Tuesday. [...]

Among children who tested positive for thyroid exposure, the amounts measured 0.04 microsieverts per hour or less in most cases. The largest exposure was 0.1 microsieverts per hour, equivalent to a yearly dose of 50 millisieverts for a 1-year-old. [...]

Babies and young children are at highest risk of developing thyroid cancer after exposure to radioactive iodine released into the atmosphere in nuclear accidents. In the case of Chernobyl, most victims who developed the cancer in following years had been babies or young children living in the affected regions at the time of the accident.

Published: July 5th, 2011 at 8:06 am ET
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