Inhalation anthrax
Inhalation or respiratory anthrax is an infectious disease
caused by breathing in the spores of the bacteria Bacillus
anthracis. Although the spores are dormant when breathed in,
they germinate when exposed to a warm, moist environment, such as
the lungs. Not all particles are small enough to pass into the
alveoli, or air sacs, but those that do begin to multiply and may
spread to the lymphatic system. When the spores germinate in the
lymph nodes, several toxins are released. Particles illustrated are
not to scale.
Review Date: 5/30/2009
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine,
Division of General Medicine, Department of Medicine, University of
Washington School of Medicine; Jatin M. Vyas, MD, PhD, Assistant
Professor in Medicine, Harvard Medical School, Assistant in
Medicine, Division of Infectious Disease, Department of Medicine,
Massachusetts General Hospital. Also reviewed by David Zieve, MD,
MHA, Medical Director, A.D.A.M., Inc.
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