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DNA hybridization data (hydroxyapatite method, 50 to 70 degrees C) indicate that Rickettsia prowazekii, the type species of the type genus of the family Rickettsiaceae, is substantially less closely(More)
Over a 12-year period, 16 human strains of a gram-negative, catalase-positive, halophilic, aerobic, nonmotile, small coccoid bacterium were received for identification. On the bases of biochemical(More)
DNA relatedness was determined among 303 strains of Leptospira and Leptonema. Included in the analysis were reference strains from 228 well-characterized and recognized serovars. The study included(More)
CDC group DF-2 is the vernacular name given to a slow-growing gram-negative bacterium that causes septicemia and meningitis in humans. Infections frequently (one-third of cases) occur following dog(More)