Thank you for writting on health care magic. In my every day practice we don t treat every patient which is mantoux positive. There are some criteria to start treatment. Manthoux can come positive wich meens that you have been exposed to mycobateri tuberculoisis but it s not equal to disesase. It needs to have other clinical correlations. A normal chest x ray normaly is against starting of treatment. At first there is the need te see you have had any privous contact with tuberculous patients. If any member in your family has had tuberculosis. Low grade fever could be symptom of other disease and the list is long including infection, systemic disease etc. You have to disccus again the reason for starting of treatment. low grade fever is not a indication for Tuberculosis treatment Wish you good health