Fusobacterium spp

Pneumonia owing to aspiration of oral contents is caused by a variety of anaerobes (Bacteroides spp., Fusobacterium spp., Prevotella spp., and anaerobic gram-positive cocci), as well as Streptococcus spp. M. catarrhalis and Eikenella corrodens may be involved, but much less frequently.14,15 When gastric contents are aspirated, then enteric gram-negative bacilli and Staphylococcus aureus are more commonly the pathogens.15... 

The colon contains about 400 different species of anaerobic and aerobic bacteria.15 The most common anaerobes in the colon are Bifidobacterium spp., Eubacterium spp., Peptostreptococcus spp., Fusobacterium spp., and Bacteroides spp. The most common aerobe in the colon is Escherichia coli.16,17 Colonic bacteria are involved in the synthesis of B complex vitamins and a majority of vitamin K.18... 

Acute ulcerative gingivitis and dental infections (Fusobacterium spp. and other oral anaerobic flora)... 

Fusobacterium spp. Metronidazole Penicillin G clindamycin first-generation cephalosporin... 

Dog and cat Pasteurella multocida, staphylococci, streptococci Moraxella spp., Eikenella corrodens, Capnocytophaga canimorsus, Actinomyces, Fusobacterium, Prevotella, and Porphyromonas spp. 

Infections caused by these injuries are most often caused by the normal oral flora, which includes both aerobic and anaerobic microorganisms. The most frequent aerobic organisms are Streptococcus spp., Staphylococcus spp., and Eikenella corrodens. The most common anaerobic organisms are Fusobacterium, Prevotella, Porphyromonas, and Peptostreptococcus spp. 

Brenn et al. [ 153] compared the efficacy of antibiotics commonly used in dental and oral clinical practice in application to the bacteria most frequently isolated in odontogenic infections (S. viridans, Peptostreptococcus spp, Prevotella intermedia, Porphyromona gingivalis and Fusobacterium nucleatum) based on pharmacokinetic and pharmacodynamic (PK/PD) analyses (effect of the human body upon the drug, reflected by the plasma concentration profile-pharmacokinetics, and the effect of the drug upon the body, as defined by the minimum inhibitory concentration, or MIC-pharmacodynamics). Antibiotics commonly used in dental practice, such as erythromycin, metronidazole or azithromycin, were found to be ineffective in apphcation in over 30% of the strains (39.1%, 50.5% and 33.2%, respectively) [154]. 

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