You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 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 and explain in detail?
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