This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Hookworm infestation is considered a major public health problem if Chandler's index is: 
Select and explain. 
A. >100, B. >200, C. >300, D. >400
C: >300
Answer: C: >300 
Explanation: Chandler index Significance < 200 Not of much significance 200-250 Potential danger 250-300 Minor public health problem >300 Major public health problem Ref: Park 21st edition, page 221. Chapter: epidemiology of communicable diseases.