National monitoring results in high water iodine areas in 2015
10.3760/cma.j.issn.2095-4255.2017.09.008
- VernacularTitle:2015年全国水源性高碘地区监测结果分析
- Author:
Fangang MENG
1
;
Hongmei SHEN
;
Shoujun LIU
;
Lijun FAN
;
Peng LIU
;
Lixiang LIU
;
Ming LI
;
Xiaohui SU
Author Information
1. 哈尔滨医科大学中国疾病预防控制中心地方病控制中心
- Keywords:
Drinking water;
Iodine,excess;
Urine;
Goiter
- From:
Chinese Journal of Endemiology
2017;36(9):657-661
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the high iodine induced thyroid goiter condition,iodine nutritional status and coverage rate of non-iodized salt in high water iodine areas.Methods The household non-iodized salt was monitored in counties (cities,regions) of high water iodine areas and high iodine diseased areas in Tianjin,Hebei,Shanxi,Jiangsu,Anhui,Shandong,Henan and Shaanxi provinces.Among the monitoring sites,where the water iodine were 150-300 μg/L or higher than 300 μg/L,50% of the them were selected to investigate the water iodine,children urinary iodine and thyroid volume of children in high iodine counties.Results Household edible salt was monitored in 110 counties of 8 provinces,with a total of 25 597 salt samples.The number of non-iodized salt was 24 640,and the coverage rate of non-iodized salt was 96.3%.After being weighted based on the population of counties,the coverage rate of non-iodized salt was 96.9%.In all,73 survey areas include 183 663 people,64 monitoring sites (87.7%) where the water iodine level were higher or equal to 150 μg/L and the median of water iodine was 250.8 μg/L.Totally 5 991 children aged 6-12 were measured thyroid volume,the total goiter rate was 6.2%,the children thyroid goiter rate was higher than 5% in Hebei,Shanxi,Henan,Tianjin and Shandong provinces.Totally 4 618 children were detected urinary iodine,the median urinary iodine concentration was 373.0 μg/L,and the children median urinary iodine concentration was exceeded 300 μg/L in Tianjin,Hebei,Shanxi,Jiangsu and Shandong provinces.The children urinary iodine concentration and goiter rate increased gradually with increasing of water iodine content.Conclusions The non-iodized salt coverage rate is high in high water iodine areas,most monitored areas have changed drinking water sources,but the median water iodine concentration is still higher than 150 μg/L.Children median urinary iodine concentration is higher than 300 μg/L,iodine is in a excessive status.The children total goiter rate is higher than 5%.Some countermeasures are proposed to search low iodine water,change water sources,do health education,and add other surveillance measures,such as thyroid function detection on target groups,and so on.