الكاتب: Multiple References

NetherlandsSince 1959, all salmonella strains (about 20,000 per year) sent for serotyping to the National Salmonella Centre have also been screened for drug resistance (3, 8, 9). The majority of the strains (about 90%) that were found to be resistant to one or more drugs were typed as Salmonella typhinurium. About 60% of all human isolates and nearly 80% of all porcine isolates belong to this serotype. S. typhimurium may therefore serve as an indicator of the emergence of drug resistance in salmonellae in The Netherlands. The major changes in drug resistance in salmonellae concerned tetracycline (Tc) resistance. This note will therefore be limited to a description of the incidence of Tc-resistant S. typhimurium isolates.