Differences Between TB Infection and TB Disease : Pamphlets about TB (Tuberculosis) - information about TB - writeups

Pamphlets about TB (Tuberculosis)

Summary Table  - Summary of Differences Between TB Infection & TB Disease view in Adobe Acrobat

Summary of Differences Between TB Infection & TB Disease

For BOTH
Tuberculosis germ in the body
TB skin test usually positive


Latent TB Infection
Chest X-ray usually normal
Sputum smears and cultures negative
Do not feel sick
Can NOT give TB to others

TB Disease (in the lungs)
Chest X-ray usually abnormal
Sputum smears and  cultures positive
Symptoms such as cough, fever, weight loss
Often can give TB to others before treatment

Taken from here and here.