Analysis of the surveillance of the iodine nutrition status of the targeted population in Dongying City

Objective The study was conducted to investigate the iodine nutrition status of thetargeted population such as pregnant and breast- feeding women, 0- to- 2- year- old infants and school-age children after the universal salt iodization in Dongying City. Methods Urinary iodine and iodinesalt consumption of the targeted population were tested and analyzed. The acid digestive arsenic-cerium reaction was used to determine the urinary iodine and direct titration was used to measure theiodine salt. Results The median urinary iodine of pregnant women was 153.78 g/L without difference between trimesters; the median urinary iodine of breast- feeding women was 151.25 g/L, and the medians of 0- to 2- year- old infants and children were respectively 187.46 g/L and 196.54 g/L. Theconstituent ratio of people with the urinary iodine value of less than 50 g/L was below 10%. Therewere 1250 investigated families that were consuming edible salt, and the coverage of iodized salt was99.28%, with a median of 31.46 mg/kg. Conclusion An appropriate level of iodine nutrition of the targeted population in Dongying City is concluded. In contrast to students, pregnant women and lactating women have obviously lowering urinary iodine levels. Therefore, the iodine nutrition status of pregnant women and lactating women, as well as other population with specific need of iodine, shouldbe focused on in future surveillance.