Perilous
Times
Tests find high amounts of thyroid radiation in Japanese
children
by Staff Writers
Tokyo (AFP) Aug 18, 2011
Forty-five percent of children tested in the region around Japan's
stricken nuclear plant were found to have high amounts of
radioactive elements in their thyroid glands, an official said
Thursday.
The official said that the iodine concentrations -- found in tests
that the government carried out about five months ago in Fukushima
prefecture -- were considered alarming in terms of their health
impact.
"The government's official position is that many of the children
showed radiation levels that would be problematic," he told AFP.
The government's nuclear accident taskforce tested 1,149 children
aged up to 15 about two weeks after the March 11 earthquake and
tsunami triggered meltdowns, blasts and fires at the Fukushima
plant.
Radioactive iodine tends to gather in the thyroid glands of minors
in particular, increasing the risk of developing cancer later in
life.
Of the valid test results collected for 1,080 children, 482 or
44.6 percent were confirmed to have some level of radioactive
contamination in their thyroid glands, the government official
told AFP.
The official, who spoke on condition of anonymity, said none of
the children suffered contamination beyond the equivalent of 0.2
microsieverts (mSv) per hour, the standard set by Japan's Nuclear
Safety Commission.
"Only one child showed a contamination level of 0.1 mSv per hour,
the highest of the group," the official said without giving the
child's sex or age.
The commission recommends that children, especially young ones,
whose thyroid gland is contaminated beyond the 0.2 mSv limit
undergo an in-depth physical checkup, citing international
standards.
The commission is considering tightening its safety standard to
0.1 mSv.
The children tested came from three municipalities -- Iwaki city,
Kawamata town and Iitate village -- where especially high levels
of radiation had been estimated after the accident, the official
said.
The Fukushima government plans to conduct life-time medical checks
for the estimated 360,000 people aged 18 or younger who were in
the prefecture at the time of the nuclear accident.
The taskforce medical team began sending test results to the
families of the children last week and gave a briefing on
Wednesday to a group of parents and guardians in Iwaki city.
Some participants complained that the team took months to inform
them of the detailed results despite the gravity of the nuclear
accident, the world's worst since Chernobyl 25 years ago, the
Asahi Shimbun daily reported.
The government official said the taskforce did not consider
informing the families of the details results as a priority since
no child had shown contamination levels beyond the safety limit.