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Latent TB vs TB Disease

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A Person with Latent TB Infection  A Person with TB Disease 
  • Does not feel sick
  • Usually feels sick
  • Has no symptoms
  • Has symptoms that may include: 
    • a bad cough that lasts 3 weeks or longer 
    • pain in the chest 
    • coughing up blood or sputum
    • weakness or fatigue 
    • weight loss 
    • no appetite 
    • chills 
    • fever 
    • sweating at night
  • Cannot spread TB bacteria to others
  • May spread TB bacteria to others
  • Usually has a positive TB skin test or positive TB blood test
  • Usually has a positive TB skin test or positive TB blood test
  • Should consider treatment for latent TB infection to prevent TB disease
  • Needs treatment for TB disease