During a dengue outbreak investigation, the Stegomyia (House) Index is calculated as 20%. This means:

• A 20% of water containers are infested with Aedes larvae
• B There are 20 Aedes larvae per 100 containers
• C 20% of adult mosquitoes captured are Aedes aegypti
• D 20% of houses inspected have at least one container with Aedes larvae or pupae ✓

Explanation

The Stegomyia House Index (Premise Index) = (Number of houses infested with larvae or pupae / Total houses inspected) × 100. A House Index of 20% means 20% of inspected premises contain at least one container positive for Aedes larvae or pupae. The WHO threshold for dengue outbreak risk is a House Index >1%. Breteau Index (containers per 100 houses) and Container Index are related measures.

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.