Francisella

tularensis Francisella tularensis is a bacterial species that is an important pathogen in humans. It primarily causes tularemia, an infectious disease that can cause fever, skin ulcers, and swelling of the lymph nodes. F. tularensis is an exceptionally deadly organism, and is classified as a Category A bioterrorism agent by the Centers for Disease Control and Prevention. It is one of the most infectious pathogens known to man, as only 10-50 organisms can cause a lethal infection in humans. Treatment for F. tularensis involves both antibiotics and supportive therapies. Vaccines are being developed to provide protection from this pathogen. F. tularensis is studied to improve our understanding of pathogenic bacteria, and explore ways to prevent, treat, and diagnose infectious diseases.