The etiological agent of rabbit fever is Francisella tularensis.

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The etiological agent of rabbit fever is Francisella tularensis.

Rabbit fever, or tularemia, is caused by Francisella tularensis. This little Gram-negative bacterium is a zoonotic pathogen that naturally infects wild mammals, especially rabbits and hares, and can be transmitted to humans through handling infected animals, insect bites (notably ticks), or inhalation of contaminated aerosols. Its high infectivity and potential for aerosol transmission are why tularemia is a classic concern in fields that involve contact with wildlife or cadavers. The other organisms listed cause very different diseases—anthrax, plague, and botulism—so they do not explain rabbit fever.

Rabbit fever, or tularemia, is caused by Francisella tularensis. This little Gram-negative bacterium is a zoonotic pathogen that naturally infects wild mammals, especially rabbits and hares, and can be transmitted to humans through handling infected animals, insect bites (notably ticks), or inhalation of contaminated aerosols. Its high infectivity and potential for aerosol transmission are why tularemia is a classic concern in fields that involve contact with wildlife or cadavers. The other organisms listed cause very different diseases—anthrax, plague, and botulism—so they do not explain rabbit fever.

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