Objective—To determine the frequency of isolation and
susceptibility patterns of Staphylococcus schleiferi from
healthy dogs and dogs with otitis, pyoderma, or both
that had or had not received antimicrobial treatment.
Procedure—Dogs were allocated to 1 of 4 groups:
healthy dogs (n = 13), dogs without otitis but with pyoderma
(10), dogs with otitis but without pyoderma (11),
and dogs with otitis and pyoderma (16). Bacteriologic
culture of ear swab specimens was performed in all
dogs. Bacteriologic culture of skin swab specimens
was also performed in dogs with concurrent pyoderma.
Isolates were identified as S schleiferi subsp schleiferi
or S schleiferi subsp coagulanson the basis of growth
and biochemical characteristics.
Results—S schleiferi was not isolated from any dogs with
pyoderma only. Staphylococcus schleiferi subsp schleiferi
was isolated from the ears of 2 healthy dogs, and the skin
and ears of 2 dogs and the skin of 1 dog with otitis and
pyoderma. Staphylococcus schleiferi subsp coagulans
was isolated from the ears of 3 dogs with otitis only, and
the ears of 6 dogs and the skin of 2 dogs with otitis and
pyoderma. One of the S schleiferi subsp schleiferi isolates
from ears, 2 of the S schleiferi subsp coagulansisolates
from ears, and 1 of the S schleiferi subsp coagulansisolates
from the skin were resistant to methicillin. One
methicillin-resistant isolate from the ears and 1 from the
skin were also resistant to fluoroquinolones.
Conclusions and Clinical Relevance—S schleiferi
subsp schleiferiwas detected in healthy dogs and dogs
with otitis and pyoderma. Methicillin-resistant and -susceptible
S schleiferi subsp schleiferi and S schleiferi
subsp coagulans were detected as the predominant
organisms in dogs with otitis. ( J Am Vet Med Assoc 2005;227:928–931)