18430
The ongoing monitoring of population iodine status remains crucially important , and particular attention may need to be paid to monitoring the status of vulnerable populations , such as pregnant women and infants .
 Chemical: iodine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: iodine