Person who has spent time with a person with infectious TB

Any person who has been exposed to an index case

Someone who has been exposed to M. tuberculosis infection by sharing air space with a person with infectious TB.

People (often family members) close to a TB patient and at risk of infection

Person exposed to a patient who has infectious TB

Person who has been exposed to an index case

Person who has spent time with a person with infectious TB

Any person who has been exposed to an index case

Someone who has been exposed to M. tuberculosis infection by sharing air space with a person with infectious TB.

People (often family members) close to a TB patient and at risk of infection

Person exposed to a patient who has infectious TB

Person who has been exposed to an index case

Person who has shared the same air space with a person who has TB disease for a sufficient amount of time to allow possible transmission of M. tuberculosis

Any person who was exposed to a person with tuberculosis

Any person exposed to a person with TB.