The Genus Dichelobacter
Chapter 36 The Genus Dichelobacter The genus Dichelobacter was created to accommodate the former Bacteroides nodosus, the cause of ovine footrot. The genus name derives from the two-clawed hooves of…
The Genera Proteus, Morganella, and Edwardsiella
Chapter 15 The Genera Proteus, Morganella, and Edwardsiella Members of these genera are facultatively anaerobic, non–lactose-fermenting, small, straight, gram-negative rods in the family Enterobacteriaceae. Colorless or whitish colonies are formed…
Coxiella burnetii
Chapter 42 Coxiella burnetii Coxiella burnetii was originally named Rickettsia burnetii, and it shares rickettsial characteristics, including obligate intracellular growth, failure to stain by Gram’s method, and transmission, in some…
The Genus Corynebacterium
Chapter 8 The Genus Corynebacterium Members of the genus Corynebacterium are actinomycetes that are related to the genera Mycobacterium, Nocardia, and Rhodococcus. The genus comprises aerobic gram-positive pleomorphic rods (Figure…
The Genus Bordetella
Chapter 18 The Genus Bordetella The genus Bordetella is taxonomically assigned to the family Alcaligenaceae within the β-Proteobacteria and is most closely related to the genera Achromobacter and Alcaligenes. These…
The Genera Escherichia and Shigella
Chapter 13 The Genera Escherichia and Shigella The genera Escherichia and Shigella are class γ-proteobacteria, in the order Enterobacteriales and family Enterobacteriaceae. THE GENUS ESCHERICHIA The genus Escherichia was named…
The Genus Francisella
Chapter 26 The Genus Francisella Francisella tularensis was isolated in 1912, during studies of a plaguelike disease in rodents in Tulare County, California, from which the specific name is derived….
The Genus Leptospira
Chapter 31 The Genus Leptospira Leptospirosis is encountered commonly by those dealing with animal infectious disease. Its occurrence as a zoonotic infection of humans is strongly influenced by connections to…
The Genera Dermatophilus and Nocardia
Chapter 9 The Genera Dermatophilus and Nocardia THE GENUS DERMATOPHILUS Members of the genus Dermatophilus are aerobic, gram-positive, branching, filamentous rods. They produce motile zoospores, and aerial mycelia are ordinarily…
The Genera Prevotella and Porphyromonas
Chapter 38 The Genera Prevotella and Porphyromonas Prevotella spp. and Porphyromonas spp. are obligately anaerobic, non–spore-forming, nonmotile, pleomorphic rods. Both genera have taxonomic placement in the class Bacteroides, order Bacteroidales;…
