Abstract

Antimicrobial Resistance Profiles of Campylobacter jejuni Isolates from Wild Birds in Sweden † Jonas Waldenström 1 , 2 , Dik Mevius 3 , * , Kees Veldman 3 , Tina Broman 4 , Dennis Hasselquist 2 and Björn Olsen 2 , 5 , 6 1 Department of Animal Ecology, Ecology Building, Lund University, SE-223 62 Lund 2 Ottenby Bird Observatory, Pl. 1500, SE-380 65 Degerhamn 4 Department of NBC Analysis, Swedish Defence Research Agency, Umeå 5 Department of Infectious Diseases, Umeå University, SE-901 87 Umeå 6 Department of Biology and Environmental Science, University of Kalmar, SE-391 82, Kalmar, Sweden 3 Central Institute for Animal Disease Control (CIDC), Lelystad, The Netherlands ABSTRACT In order to determine the occurrence and frequency of resistant strains of the bacterium Campylobacter jejuni and to establish baseline MICs in isolates from an environmental reservoir, the resistance profiles of 10 antimicrobial substances were determined for 137 C. jejuni isolates from wild birds in Sweden. Observed MICs were generally low, with only low to moderate incidence of resistance to the tested compounds. One isolate, however, was resistant to nalidixic acid and ciprofloxacin, indicating that quinolone-resistant genotypes of C. jejuni have the potential to spread to wild bird hosts.