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Bacteria isolates from skin and ears over 6 years
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Staphylococcus intermedius is by far the most common bacteria isolated in superficial pyoderma, and Pseudomonas aeruginosa is commonly involved in ear infections. Did their frequency change over the years, and did their antibacterial resistance change. Very important questions for adequate therapy- One of the results of this retrospective study: Psueudomonas ear infections are raising, and one should always do antibiogramms when Pseudomonas aeruginosa is isolated.
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Staphylococcus intermedius (S. intermedius) was isolated from 88.6% and 49.4% of skin and ear samples, respectively, during the years 1992 through 1997, and frequency of isolation remained unchanged.
More than 95% of all S. intermedius isolates were susceptible to cephalothin and oxacillin, providing support for empirical treatment of canine skin and ear infections with cephalexin.
Pseudomonas aeruginosa (P. aeruginosa) was isolated from 7.5% and 27.8% of skin and ear samples, respectively.
The frequency of isolation from skin samples increased over the study period.
Because of multidrug-resistant profiles for P. aeruginosa isolates, especially for ear isolates, empirical treatment of P. aeruginosa infections is not advisable.
Source: Annette D. Petersen, Robert D. Walker, Mark M. Bowman, Harold C. Schott, Edmund J. Rosser (2002): Frequency of Isolation and Antimicrobial Susceptibility Patterns of Staphylococcus intermedius and Pseudomonas aeruginosa Isolates From Canine Skin and Ear Samples Over a 6-Year Period (1992–1997). In: Journal of the American Animal Hospital Association 38:407-413 (2002)
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