Clinical evaluation of household and close contacts for active TB is recommended as a priority on the basis of their risk for having or developing active TB or for the potential consequences of the disease if it develops. Priority should be given to: people of all ages with symptoms suggestive of TB, children < 5 years of age, people with known or suspected immunocompromising conditions (especially person living with HIV infection (PLHIV)) and contacts of index cases with multidrug-resistant tuberculosis (MDR-TB) or extensively drug-resistant tuberculosis (extensively drug-resistant tuberculosis (XDR-TB)) (proven or suspected).