Reaffirmation and classifcation of the areas with highwater iodine and the endemíc areas of íodine excess goiter in Jiansu Provice / 中国地方病学杂志

ABSTRACT

Objective To affirm and calssify the arsas with high water iodine and the endemic areas of indline excess goiter in Jiangsu Privince accirding to mational standard.Methods A cross section survey was condueted in 2005 at township level in Fenxian,Tongshan,Suining,Pizhou counties in Xuzhou municipal and Chuzhou district in Huai'an municipal in Jiangsu Province One sample of dringing well water from five directions in the five villages located dircetions of every township namely east west south north and central.was tested for its water iodine concentration.If the sample number sas less than 5 in one village,then all the well water would be tested Endemic stutas of iodine excess goiter was investigated in those townships whose menian water iodine comcentration was between 150 to 300 μg/L Then status was affirmed and reclassifed according.to National Criteria GB/T 19280-2003 Results In all 158 tawnships from the 6 counties the median of water iodine concentration in 79 townships were over 150 μg/L with 32 townships in the range of 150 to 300μg/L In those 32 townships 9 met the criteria of area of high water iodine 23 accorded with that of encemic areas of iosine excess goiter 16 had stopped the supply of non-iodzed salt in advace,but 16 newly detected areas were still served with iodized salt Four were 300 μg/L Conctusions Iodized salt intervention should be stopped in all townships with the problems of high water iodine and the endmic areas of iodine excess goter in order to prevent the possible hazards due to double intade.