Analysis of antibiotic resistance patterns of fecal Enterococcus in coastal waters of Puerto Rico

Abstract

Multiple antibiotics resistance of Enterococcus species (ES) was compared in Guánica, Guayanilla, and Mayagüez coastal water. Only 10, 12, and 12% of ES respectively were resistant to chlortetracycline at 10 μg/ml and less than 5% were resistant at 50 μ g/ml. However, in Barceloneta coastal water 48% and 28% of ES were resistant to chlortetracycline at 10 and 50 μ g/ml respectively. Similar results were obtained using oxytetracycline and salinomycin. Numbers of Enterococcus species resistance to multiple antibiotics were highest in Barceloneta and lowest in Guánica coastal water. Results of multiple antibiotic resistances in Barceloneta River, estuary, and coastal water are presented. © 2007 Springer.