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 Tuberculin test is said to be positive when there is. and explain in detail?
- A positive tuberculin test is when an induration of diameter 10 mm more is present. - erythema is not taken into account. - It indicates hypersensitivity to tuberculoprotein, denoting infection with tubercle bacilli or BCG immunisation , recent or past with or without clinical disease. Reference : Anathanarayan & paniker&;s 9th edition, pg no: 354,355