<unk>  is a genus of pathogenic, Gram-negative bacteria.They are small coccobacillary or rod-shaped, non motile organisms, which are also facultative intracellular parasites of macrophages. Strict aerobes,<unk>  colonies bear a morphological resemblance to those of the genus Brucella. The bacteria penetrate into the body through damaged skin and mucous membranes, or through inhalation. Humans are most often infected by tick bite or through handling an infected animal. Ingesting infected water, soil, or food can also cause infection. Tularemia can also be acquired by inhalation; hunters are at a higher risk for this disease because of the potential of inhaling the bacteria during the skinning process.<unk>  tularensis is an intracellular bacterium, meaning that it is able to live as a parasite within host cells. It primarily infects macrophages, a type of white blood cell. It is thus able to evade the immune system. The course of disease involves spread of the organism to multiple organ systems, including the lungs, liver, spleen, and lymphatic system.
Francisella
Salmonella
Brucella
Shigella
Listeria
Ehrlichia
Leptospira
Salmonella enterica