Under NACP Phase IV, which surveillance system specifically tracks HIV among key populations (FSW, MSM, PWID) using respondent-driven sampling (RDS)?

• A AIDS Sentinel Surveillance (ASS) using ANC clinic attendees
• B District Level Household Survey (DLHS)
• C National Family Health Survey (NFHS) HIV module
• D Integrated Biological and Behavioural Surveillance (IBBS) ✓

Explanation

The Integrated Biological and Behavioural Surveillance (IBBS) is NACO's surveillance system for HIV and related risk behaviours in key and bridge populations (female sex workers, men who have sex with men, people who inject drugs, transgenders, truckers). It uses respondent-driven sampling (RDS), a peer-referral chain-referral method suited for hard-to-reach populations. AIDS Sentinel Surveillance uses convenient clinical sites (ANC, STI clinics) and does not employ RDS.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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