What is a PET/CT scan? Positron Emission Tomography (PET) and Computed Tomography (CT) scans are both standard imaging tools that physicians use to pinpoint disease states in the body. A PET scan images the cellular activity of the body at a very early stage, often before anatomical changes take place.
Tularemia is a rare infectious disease that typically attacks the skin, eyes, lymph nodes and lungs. Tularemia â also called rabbit fever or deer fly fever â is caused by the bacterium Francisella tularensis.
Background. 1  Tularemia, a bacterial zoonosis, is caused by Francisella tularensis, one of the most infectious pathogenic bacteria known. It requires inoculation or inhalation of as few as 10 organisms to cause disease. 2  F. tularensis is a small, nonmotile, aerobic, gram-negative coccobacillus.