IODINE STATUS OF SCHOOL-AGED CHILDREN AND PREGNANT WOMEN IN THE CHANGING  CONTEXT OF UNIVERSAL SALT IODIZATION  PROGRAM IN BAYANNUR CITY, CHINA:  A CROSS-SECTIONAL STUDY

Authors

  • Jianguo Liu Bayannur City Disease Prevention and Control Center
  • Zhanli Wang Hospital of Baotou Medical College

Keywords:

child, iodized salt survey, pregnant woman, urine iodide level

Abstract

Iodine deficiency disorders (IDD) remain an unresolved public health problem.  This study aimed to provide a theoretical support for the prevention and control of iodine deficiency-related diseases in children 8-10 years of age and pregnant women in Bayannur City, PR China, by monitoring prevalence of iodine deficiency.  The research was conducted in the seven districts (counties) of Bayannur City as monitoring sites, employing a stratified random sampling to collect household salt samples and urine specimens from partipating children and pregnant women for analysis of iodide in household salt samples and in urine specimens.  A total of 1,456 samples of household salt and 1,453 urine specimens were collected from children and 708 samples of household salt and 709 urine specimens from pregnant women.  The median iodide content in children’s household salt samples was 21.90 mg/kg, with an iodized salt coverage rate of 96.43%, a “qualified” iodized salt coverage rate of 83.33%, a non-iodized salt coverage rate of 3.57%, and a “qualified” iodized salt consumption rate of 80.36% and 100% in Wuyuan and Dengkou county respectively.  The median urine iodide content in children was 218.61 μg/l, indicating a level above the required range.  The median iodide content in pregnant women’s household salt was 22.42 mg/kg, with an iodized salt coverage rate of 96.75%, a “qualified” iodized salt coverage rate of 93.87%, a non-iodized salt coverage rate of 3.25%, and a “qualified” iodized salt consumption rate of 90.82%.  The median urine iodide content in pregnant women was 176.00 μg/l, indicating an iodide level within the required range.  Thus, the iodine nutrition levels of pregnant women and children 8 to 10 years of age in Bayannur City were adequate, but it is worth noting that iodine insufficiency was still present in 35.68% of pregnant women (all three trimesters of gestation).  In addition, the “qualified” iodized salt coverage rate in some counties of Bayannur City was low, indicating the need to strengthen the monitoring of household iodized salt availability in Bayannur City, PR China.

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Published

2024-06-24

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