Actinobacillus equuli ssp. haemolyticus in a semi-occlusively treated horse bite wound in a 2-year-old girl.
We report on the isolation of Actinobacillus equuli ssp. haemolyticus from wound smears of a 2-year-old girl who was admitted to the hospital due to partial amputation of the distal phalanx of her right middle finger caused by a horse bite. A. equuli typically causes diseases in horses and only very few reports describing human infections (mostly associated with wounds) are available in the literature. Interestingly, although the bacteria could be found in consecutive samples taken at different points in time, there were no signs of advancing infection or inflammation. Moreover, the fingertip regenerated after 74 days under semi-occlusive dressings with very pleasant results. For strain identification two automated systems were employed producing discrepant results: VITEK 2 described the pathogens as Pasteurella pneumotropica while MALDI-TOF MS analysis revealed A. equuli. Sequence analysis of 16S rDNA gene finally confirmed A. equuli ssp. haemolyticus as the isolated strain. The antimicrobial susceptibility testing was performed according to the CLSI criteria for Pasteurella spp. Additionally we conducted a test according to the EUCAST criteria.
Faculty of Medicine, Institute of Medical Microbiology and Hygiene,Universitätsklinikum Carl-Gustav-Carus, Dresden, Germany.
Percy
P
Schröttner
Jurek
J
Schultz
Wolfram
W
Rudolph
Florian
F
Gunzer
Alexander
A
Thürmer
Guido
G
Fitze
Enno
E
Jacobs
D000189:Actinobacillus Infections / Q000175:diagnosis / Q000382:microbiology / Q000628:therapy*; D044131:Actinobacillus equuli / Q000302:isolation & purification*; D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D001458:Bandages; D001733:Bites and Stings / Q000175:diagnosis / Q000382:microbiology / Q000628:therapy*; D002675:Child, Preschool; D005260:Female; D006736:Horses / Q000382:microbiology*; D006801:Humans; D016896:Treatment Outcome
D000900:Anti-Bacterial Agents
Actinobacillus equuli; MALDI-TOF MS; Pasteurella; VITEK 2; finger amputation; semi-occlusive dressing