## HIV Transmission Routes in India **Key Point:** Heterosexual transmission is the predominant route of HIV acquisition in the Indian general population, accounting for approximately 85–90% of new infections. ### Epidemiological Distribution of HIV Transmission in India | Transmission Route | Proportion of New Infections | Key Population | | --- | --- | --- | | Heterosexual | 85–90% | General population, spouses of PLHIV | | Mother-to-child | 5–7% | Infants born to HIV+ mothers | | Injection drug use | 2–3% | PWID in Northeast India, urban centers | | Male-to-male sexual contact | 1–2% | MSM, though underreported | | Blood/blood products | <1% | Healthcare workers, transfusion recipients | **High-Yield:** India's HIV epidemic is **heterosexually driven**, unlike Western countries where MSM and PWID remain significant contributors. This has major implications for: - Public health messaging (focus on condom use in heterosexual partnerships) - Prevention strategies (PMTCT programs, spouse notification) - Epidemiological modeling **Clinical Pearl:** The high proportion of heterosexual transmission in India means that many women and children are infected through no direct risk behavior — they acquire HIV from infected spouses or through vertical transmission. This underscores the importance of universal testing and PMTCT programs. **Mnemonic:** **"H for Heterosexual in India"** — the primary driver of the Indian HIV epidemic.
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