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 HIV sentinel surveillance provides data mainly for: and explain in detail?
HIV Sentinel surveillance: Aim- To monitor trends of HIV infection. Objectives include- Determining level of HIV infection among general population as well as high risk groups To understand trends of HIV epidemic To understand geographical spread of it Estimation of HIV prevalence & disease burden Provide information for prioritization of programme resources & evaluation of its impact