Capnocytophaga canimorsus

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Cap·no·cy·toph·a·ga can·i·mor'·sus

a bacterial species linked to infections from dog bites (including bacteremia, endocarditis, and meningitis). Formerly designated DF-2 (that is, dysgonic fermenter-2) by the CDC. These infections usually occur in patients with impaired immune systems.

Capnocytophaga canimorsus

The main human pathogen associated with dog bites. This organism causes septicemia, meningitis, endocarditis, and rare ocular infections.Persons at increased risk of developing C. canimorsus infections include patients who have undergone a splenectomy and those who abuse alcohol.


Treatments may include penicillins, or in penicillin-allergic patients, doxycycline and metronidazole.

See also: Capnocytophaga
References in periodicals archive ?
Capnocytophaga canimorsus sepsis is the main human pathogen associated with dog bites.
Studies show that use of oral antibiotics for all types of dog bite wounds reduces the risk of infection by nearly 50%, (5) Common bacteria isolated from bite wounds include Capnocytophaga canimorsus, Pasteurella multocida, (8) streptococci, (9) and a range of other aerobic and anaerobic pathogens.
Blood cultures, approximately a month following admission, were confirmed as Capnocytophaga canimorsus (DF-2).
Capnocytophaga canimorsus (formerly CDC Group DF-2) has been rarely but regularly isolated from dog or cat bite infections since its discovery in 1976.
Association of a generalized Shwartzman reaction after a dog bite was first reported in 1970, when Capnocytophaga canimorsus was still unrecognized as a significant pathogen in dog bites.
Capnocytophaga canimorsus is susceptible to penicillins, imipenem, erythromycin, vancomycin, clindamycin, third-generation cephalosporins, chloramphenicol, rifampicin, doxycycline, and fluoroquinolones.
Capnocytophaga canimorsus septicemia: fifth report of a catassociated infection and five other cases.
Capnocytophaga canimorsus is the main human pathogen associated with dog bites; this organism causes septicemia, meningitis, endocarditis, and rare ocular infections (3,4).
Capnocytophaga canimorsus septicemia in Denmark, 1982-1995: review of 39 cases.
Meningitis due to Capnocytophaga canimorsus after receipt of a dog bite: case report and review of the literature.