Follow the usual procedures to evaluate TB suspects household contacts (adults and children aged 5 years or more):

• Inquire about TB symptoms


• Collect 1 or 2 sputum samples from all people with suspected TB


• Use results of sputum examination, symptom review, and (if applicable) chest x-ray to determine whether the contact has TB disease and initiate TB treatment if needed

• Prolonged cough or other respiratory symptoms
• Fever for more than 14 days (after common causes such as malaria or pneumonia have been excluded
• Abnormal chest x-ray (nodal enlargement)
• Loss of weight or failure to gain weight (failure to thrive)

*Some countries may use TST and IGRA in contact investigations. Follow your national guidelines for use of these tests.