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
Number of doses of HDCV vaccine required for preexposure prophylaxis -
assistant
The correct answer is  Pre exposure prophylaxis requires 3doses(0,7,21. REF:<\p> ANANTHA NARAYANAN MICRONIOLOGY NINTH EDITION PAGE.536