• [1]
    Bates, J., Jordens, Z., Selkon, J.B. (1993) Evidence for an animal origin of vancomycin-resistant enterococci. Lancet 342, 490491.
  • [2]
    Aarestrup, F.M. (1995) Occurrence of glycopeptide resistance among Enterococcus faecium isolates from conventional and ecological poultry farms. Microb. Drug Resist. 1, 255257.
  • [3]
    Klare, I., Heier, H., Claus, H., Reissbrodt, R., Witte, W. (1995) vanA-mediated high-level glycopeptide resistance in Enterococcus faecium from animal husbandry. FEMS Microbiol. Lett. 125, 165171.
  • [4]
    Kruse, H., Johansen, B.K., Rørvik, L.M., Schaller, G. (1999) The use of avoparcin as a growth promoter and the occurrence of vancomycin-resistant Enterococcus species in Norwegian poultry and swine production. Microb. Drug Resist. 5, 135139.
  • [5]
    Bager, F., Aarestrup, F.M., Madsen, M., Wegener, H.C. (1999) Glycopeptide resistance in Enterococcus faecium from broilers and pigs following discontinued use of avoparcin. Microb. Drug Resist. 5, 5356.
  • [6]
    Klare, I., Badstübner, D., Konstabel, C., Böhme, G., Claus, H., Witte, W. (1999) Decreased incidence of VanA-type vancomycin-resistant enterococci isolated from poultry meat and from fecal samples of humans in the community after discontinuation of avoparcin usage in animal husbandry. Microb. Drug Resist. 5, 4552.
  • [7]
    Pantosti, A., del Grosso, M., Tagliabue, S., Macri, A., Caprioli, A. (1999) Decrease of vancomycin-resistant enterococci in poultry meat after avoparcin ban. Lancet 354, 741742.
  • [8]
    Borgen, K., Simonsen, G.S., Sundsfjord, A., Wasteson, Y., Olsvik, Ø. and Kruse, K. (2000) Continuing high prevalence of VanA-type vancomycin-resistant enterococci on Norwegian poultry farms three years after avoparcin was banned. J. Appl. Microbiol., in press.
  • [9]
    Dutka-Malen, S., Evers, S., Courvalin, P. (1995) Detection of glycopeptide resistance genotypes and identification to the species level of clinically relevant enterococci by PCR. J. Clin. Microbiol. 33, 2427.
  • [10]
    Clark, N.C., Cooksey, R.C., Hill, B.C., Swenson, J.M., Tenover, F.C. (1993) Characterization of glycopeptide-resistant enterococci from US hospitals. Antimicrob. Agents Chemother. 37, 23112317.
  • [11]
    Davies, R.H., Wray, C. (1996) Persistence of Salmonella enteritidis in poultry units and poultry food. Br. Poult. Sci. 37, 589596.
  • [12]
    Davies, R.H., Wray, C. (1996) Studies of contamination of three broiler breeder houses with Salmonella enteritidis before and after cleansing and disinfection. Avian Dis. 40, 626633.
  • [13]
    Johnsen, P., Simonsen, G.S., Olsvik, Ø. and Sundsfjord, A. (2000) In vitro studies of competitive fitness between isogenic vancomycin resistant and sensitive Enterococcus faecium strains (Abstract). In: 1st International ASM Conference on Enterococci: Pathogenesis, Biology and Antibiotic Resistance. Banff, Alberta, Canada, February 27–March 2, 2000.