Investigation and Analysis on Iodine Deficiency Disorders in 2004 in Wenzhou

Objective This research was made to understand the prevalence of IDDs after the phased goals of annihilating iodine deficiency disorders(IDDs) were achieved，so as to deepen the fruit of prevention and cure，and provide a scientific basis for perfecting continuous elimination system of IDDs．Methods 12 samples of urine were independently collected from each of the three classes among students aged between 8 and 10 years in the central primary school from each of the five countrysides located in the east，west，south，north and center that were selected from 7 counties (cities，districts) around the whole city，with the proportion of male to female being 1 to 1．At least 288 samples of edible salt from 36 villages of 9 countrysides must be taken in each county．Results The rate of thyroid enlargement among children of 8—10 years was 4.95％．The median of uric iodine was 206.17 μg／L with those≥100 μg／L accounting for 86.76％．It was showed that the coverage rate of iodized salt was 84.76％，with the up-to-standard rate of edible iodized salt being 80.34％．Conclusion Although the rate of thyroid enlargement among children with iodine deficiency disorders in Wenzhou has already met the standard of elimination，but we should still enhance the propaganda strength on harms of iodine deficiency disorders and improve the coverage rate of qualified iodized salts．Insistence on long-term intake of qualified iodized salts is a radical pathway to continuously exterminate harms of IDDs．