title: Antimicrobial susceptibility of Haemophilus parasuis and Histophilus somni from pigs and cattle in Denmark.
abstract: A total of 52 Haemophilus parasuis and 80 Histophilus somni isolates were tested for antimicrobial susceptibility by MIC-determinations. None of the isolates were resistant to ampicillin, ceftiofur, ciprofloxacin, erythromycin, florphenicol, penicillin, spectinomycin, tetracycline, tiamulin, or tilmicosin. Two H. parasuis isolates were resistant to trimethoprim + sulfamethoxazole. Six H. parasuis isolates had reduced susceptibility (0.06-0.5 microg/ml) to ciprofloxacin and 10 reduced susceptibility to TMP + sulfamethoxazole (1-2 microg/ml). This study showed that Danish isolates of H. parasuis and H. somni in general are fully susceptible to antimicrobial agents currently used for treatment of infections with these pathogens.
authors.affiliation: Danish Institute for Food and Veterinary Research, Bülowsvej 27, DK-1790 Copenhagen V, Denmark. faa@dfvf.dk
authors.forename: Frank M
authors.initials: FM
authors.lastname: Aarestrup
authors.forename: Anne Mette
authors.initials: AM
authors.lastname: Seyfarth
authors.forename: Øystein
authors.initials: Ø
authors.lastname: Angen
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D003718:Denmark; D024881:Drug Resistance, Bacterial; D006192:Haemophilus Infections / Q000382:microbiology / Q000662:veterinary*; D044137:Haemophilus parasuis / Q000187:drug effects* / Q000254:growth & development / Q000302:isolation & purification; D044138:Haemophilus somnus / Q000187:drug effects* / Q000254:growth & development / Q000302:isolation & purification; D008826:Microbial Sensitivity Tests / Q000662:veterinary; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology*
chemical_list: D000900:Anti-Bacterial Agents