The Stegomyia indices are used in dengue surveillance. Which index measures the proportion of houses with Aedes aegypti containers relative to houses inspected?
- A Container Index (CI)
- B House Index (HI) ✓
- C Breteau Index (BI)
- D Pupal Index (PI)
Correct answer: B. House Index (HI)
Explanation
House Index (HI) = (Number of houses infested with larvae/pupae / Number of houses inspected) × 100. Container Index (CI) = (Number of infested containers / Total containers inspected) × 100. Breteau Index (BI) = Number of positive containers per 100 houses inspected — considered the most informative single index. A BI > 50 indicates a high dengue transmission risk. HI > 1% or BI > 5 triggers vector control interventions.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.