The House Index (HI) is a key Aedes aegypti surveillance metric for dengue risk assessment. Which of the following correctly defines HI?

• A Number of Aedes larvae or pupae per 100 houses inspected
• B Number of adult Aedes mosquitoes per household
• C Percentage of water containers positive for Aedes per house
• D Percentage of houses with Aedes larvae or pupae out of houses inspected ✓

Explanation

The House Index (HI) = (Number of houses positive for Aedes larvae or pupae / Number of houses inspected) × 100. A HI ≥ 1% indicates epidemic potential for dengue. The Breteau Index (BI) = number of positive containers per 100 houses (includes container-level data). The Container Index = (positive containers / total containers) × 100. Stegomyia indices (HI, BI, CI) are used for dengue vector surveillance.

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.