Is an intracellular bacteria, which includes mycobacteria, Listeria, Legionella, Brucella, Coxiella and Rickettsia

Taxonomy
Family: Francisellaceae

Natural habitat
They are widely distributed in the natural environment (salty water) and is of low virulence, although it may cause disease in immunocompromised individuals.

Clinical significance
Francisella philomiragia, is of low virulence and occasionallycauses disease in immunocompromised individuals.
They may cause pneumoniae or fever with or without organ manifestation, such as meningitis or peritonitis

Human infections caused by F. philomiragia are rare and considered opportunistic infections, infecting primarily patients with underlying immunocompromissing conditions.