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
Accidental from a needle stick, an unknown quantity of blood from an AIDS patient is injected into a nurse, lab reports of the patient show CD4 count 20/microL and a viral RNA load of more than 10^7copies/ml. What action should be taken regarding the treatment of the nurse
assistant
The correct answer is  None