International dissemination of antibiotic resistant strains of bacterial pathogens.

摘要: Abstract The increasing incidence of methicillin and multiple resistant Staphylococcus aureus (MRSA) in nosocomial infections is mainly associated with a wide, international dissemination well defined clonal lineages (epidemic MRSA) which are clearly different from community acquired MRSA by molecular typing patterns structure the staphylococcal cassette chromosome containing mecA gene. Although belonging to definite subpopulation within species Enterococcus faecium, hospital vancomycin isolates also esp gene have very likely evolved acquisition glycopeptide resistance clusters at occasions times susceptible already disseminated lineage. There obviously continuous selection new types extended spectrum β-lactamases enterobacteriaceae horizontal spread bla-genes. Intrahospital particular strains has often been observed, however, an until now described only for Salmonella enterica serovar Typhimurium producing CTX-M-3 enzyme. Multiresistant phage type DT104 harbour multiresistant cluster genes taxonomically more unrelated (tetG, floR, blaPSE1). vitro transduction demonstrated, this rarely reported exhibiting other same or serovars S. enterica.