Mycobacterium tuberculosis

Precautions

Airborne Precautions (N95)

General Information

Acid fast bacillus.

Latent disease is believed to affect >20% of world population.

Prevalence is higher in developing nations and mimics HIV/AIDS distribution. The greatest risk factor for progression of latent infection to active TB is HIV infection.

Pulmonary:

  • Cavitating pneumonia

  • Upper lobe pneumonia

  • Occasionally miliary

Extrapulmonary:

  • Lymph node disease

  • CNS infection

  • Osteomyelitis (Potts)

  • Peritoneal

  • Others

Airborne precautions for pulmonary disease.

Caseating granulomas on pathology.

MDR includes rifampin and isoniazid resistance.

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