This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Risk of HIV transmission after needle stick injury is ? \nSelect and explain. \nA. 0.30%, B. 0.5-1%, C. 2-3%, D. 10-20%', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The average risk for HIV infection after a needlestick or cut exposure to HlV-infected blood is 0.3%.The risk after exposure of the eye, nose, or mouth to HIV-infected blood is estimated to be, on average, 0.1%.The risk after exposure of the skin to HlV-infected blood is estimated to be less than 0.1%. A small amount of blood on intact skin probably poses no risk at all.The risk may be higher if the skin is damaged (for example, by a recent cut), if the contact involves a large area of skin, or if the contact is prolonged.', 'role': 'assistant'}]