Abstract
Neisseria animaloris and Neisseria canis are rare, zoologic microorganisms that are found in the oral and nasal cavities of felines and canines. Though the pathogenicity of Neisseria meningitis and gonorrhea are common, N. canis and animaloris have been far less documented to cause infections in humans and moreover it is exceedingly rare to cause necrotizing fasciitis and gas gangrene. We report the first successful surgical treatment of a 46-year-old female with a case of necrotizing fasciitis, compartment syndrome, and gas formation formed from a bacterial colony involving Neisseria animaloris, Neisseria canis, Bacillus cereus, Strepococcus viridans, coagulase-negative Staphylococcus aureus, and Corynebacterium.