Antibiotic resistance patterns of faecal indicator organisms and occurrence of Salmonella spp. in wild boar (Sus scrofa scrofa) in Italy.

Date
2007-01-01
Authors
Rossi, M.
Delogu, M.
Ostanello, F.
Caprioli, A.
Zanoni, R.
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Abstract

In order to monitor antibiotic resistance in faecal indicator organisms and evaluate the occurrence of Salmonella spp., faeces from 110 wild boars (Sus scrota scrota), killed during a demographic control program in two different regional parks in Bologna province, were collected from September 2002 to June 2003. A single isolate of Escherichia coli, Enterococcus faecalis and Enterococcus faecium from each sample was tested for antibiotic susceptibility using the agar diffusion method recommended by CLSI (formerly, NCCLS). A total of 110 E. coli, 48 E. faecium and 5 E. faecalis strains were isolated and submitted to antibiotic susceptibility tests. Antibiotic resistance patterns were similar in wild boar populations from both parks. Multiple antibiotic-resistance to ciprofloxacin, rifampin and erythromycin was found with h1gh frequency in Enterococcus spp strains. E. coli isolates showed a low antibiotic resistance level. Two Salmonella arizonae and one Salmonella spp. strains, isolated from wild boars of one park, didn't show any resistance concerning the antibiotics tested.

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