Isolation and identification of Caviibacter abscessus from cervical abscesses in a series of pet guinea pigs (Cavia porcellus).

An organism reported in the early literature to be a rare cause of cervical lymphadenitis in guinea pigs, Streptobacillus moniliformis, has been reclassified as Caviibacter abscessus We describe a series of sequential cases of abscesses in guinea pigs that were presented to our clinic from which the only agent isolated was a unique, serum-requiring bacterium. Discrete colonies were not detected in 6.5% CO or anaerobically on routine primary isolation media containing up to 5% whole sheep blood, with and without cysteine, vitamin K, and hemin supplementation after 7 days of incubation at 37°C.

Synergistic hemolysis between β-lysin-producing Staphylococcus species and Rothia nasimurium in primary cultures of clinical specimens obtained from dogs.

Nonhemolytic isolates of catalase-positive, Gram-positive cocci were observed that produced strong synergistic hemolysis with colonies of Staphylococcus pseudintermedius and Staphylococcus schleiferi subsp. coagulans in primary cultures of clinical specimens from dogs. The isolates appeared similar to nonhemolytic staphylococci but were not identified with conventional biochemical tests or commercial biochemical test kits.

Isolation of a variant Porphyromonas sp. from polymicrobial infections in central bearded dragons (Pogona vitticeps).

Isolates of gram-negative anaerobic bacteria from reptiles have only occasionally been identified to the genus and species level in the veterinary medical literature. In particular, reports identifying Porphyromonas spp. from infections in reptiles are scarce.

Isolation of Propionibacterium acnes from a case of placentitis and abortion in a cow.

On the basis of the scarcity of reports in the veterinary literature, it appears that Propionibacterium spp. are rarely associated with disease or isolated from cattle tissues. Recently, Propionibacterium spp.

Isolation of Arcanobacterium hippocoleae from a case of placentitis and stillbirth in a mare.

Based on the scarcity of reports in veterinary medicine literature, it appears that Arcanobacterium spp. are rarely isolated from horses. Recently, a single isolate from vaginal discharge in a mare was characterized as a new species, Arcanobacterium hippocoleae.