Monitoring of Antimicrobial Resistance in Staphylococci Isolated from Bovine Intramammary Infections

摘要

Antimicrobial substances are frequently used to treat clinical cases of bovine mastitis and as dry cow therapy. Both measures are considered important items of mastitis control programs for dairy herds (BRADLEY & GREEN, 2004). The continued use of antimicrobials in dairy herds is of concern due to selection of resistant forms of bacteria (WHO, 1997). The antimicrobial resistance found in animal pathogens may be related to failures in the mastitis curing rates. It might also affect human health by influencing the generation or selection of drug-resistant foodborne pathogens. Staphylococci are the most prevalent mastitis pathogens in Brazilian herds. The aim of this work was to monitor the antimicrobial susceptibility of staphylococci isolated from dairy herds during three years.