Disease Progression

Bovine tuberculosis progresses from initial infection, subclinical symptoms, to a severe disease state riddled with numerous lesions. Death may eventually result.

Step 1: Infection

  • Bacteria enters respiratory system
  • Engulfed by immune cells
  • Carried to lymph nodes and throughout respiratory tract

Step 2: A silent danger 

  • Symptoms often do not appear for long periods of time following infection (subclinical infection)

Step 3: Lesions!

  • Development of numerous¬†lesions on infected organs

Step 4: Death?

  • Weakened, emaciated state
  • May eventually result in death

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