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Q67 (IAS/2010) Science & Technology › Biotechnology & Health › Human infectious diseases Answer Verified

With regard to the transmission of the Human Immunodeficiency Virus, which one of the following statement if not correct?

Result
Your answer: —  Â·  Correct: A
Explanation

Option 1 is not correct. Epidemiologic estimates show the per‑exposure risk for receptive penile–vaginal intercourse (male-to-female transmission) is about 10 per 10,000 exposures, while insertive penile–vaginal intercourse (female-to-male) is about 5 per 10,000 — indicating male-to-female transmission is roughly twice as likely as female-to-male, not the reverse [1]. The other statements are accurate: concomitant sexually transmitted infections increase HIV susceptibility and transmissibility (estimated 2–4×); infected mothers can transmit HIV during childbirth and through breastfeeding [2]; and transfusion of contaminated blood carries a much higher per‑exposure transmission risk than percutaneous needle exposures (supporting option 4) [1].

Sources

  1. [1] https://www.smchealth.org/sites/main/files/file-attachments/kassaye_levy_hiv_trans.pdf
  2. [2] https://ncert.nic.in/textbook/pdf/iehp101.pdf
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