system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Least common mode of transmission of HIV-
assistant
The correct answer is  Homosexual or Heterosexual contact  → 50-70%
IV drug abuse  → 25%
Recipient of blood and blood components → 1%
Haemophiliacs receiving factor VIII or IX  → 0.5%