Social & Preventive Medicine As per WHO guidelines, iodine deficiency disorders are endemic in the community when prevalence of goitre in school age children is more than – A 1% B 5% C 10% D 15% 💡 Explanation As per WHO guidelines, iodine deficiency disorders are endemic in the community when prevalence of goitre in school age children is more than – ✓ Correct Answer: B. 5%