From 1990 to 2007, global population coverage
with iodised salt increased from about 20% to 70%.2
But the International Council for the Control of Iodine
Deficiency Disorders (ICCIDD) estimates that nearly
two billion individuals in 2011 continue to have
insufficient iodine intake worldwide, including 1/3
of all school-age children, and iodine deficiency
remains a public health problem in 32 countries.3
There are insufficient data from nearly all countries to
estimate the prevalence of iodine deficiency in pregnant
women.