The genes encoding the VanA type of vancomycin resistance in enterococci are located on elements related to Tn1546 (1). Heterogeneity of Tn1546 in Enterococcus faecium has been previously reported (3, 4, 6, 9, 10, 12, 14, 15, 16) and includes deletions, insertions, and mutations. In this study, Tn1546 elements from 43 vanA-containing isolates of different enterococcal species with diverse pulse...

background: vancomycin (glycopeptide)-resistant enterococci (vre or gre) can cause serious problems for hospitalized patients due to the limited options for treatment of vre infections. as infection with vre increases in hospitals, further knowledge about vancomycin resistant genes is needed. methods: isolates of enterococcus spp. were collected from hospitalized patients in tehran (iran) durin...

Background. Oritavancin (ORI) is under regulatory review in the USA and Europe for the treatment of acute bacterial skin and skin structure infections (SSSI) caused by Gram-positive pathogens. The ORI activity was assessed against contemporary isolates causing SSSI. Methods. 8,428 isolates from documented SSSI were collected from 27 sites in the USA and 34 sites in Europe, Israel and Turkey as ...

In this study we report the first isolation of VanA-type vancomycin-resistant Enterococcus faecalis strains from two different patients hospitalized in the same intensive care unit at the hospital of Universidade Federal do Triângulo Mineiro (UFTM), Uberaba, Minas Gerais, Brazil.

Bacteriocin production was determined for 218 Enterococcus isolates (Enterococcus faecalis [93] and E. faecium [125]) obtained from different origins (human clinical samples [87], human fecal samples [78], sewage [28], and chicken samples [25]) and showing different vancomycin susceptibility patterns (vancomycin resistant, all of them vanA positive [56], and vancomycin susceptible [162]). All e...

OBJECTIVES We determined the presence of antibiotic-resistant enterococci (ARE) in commercialized poultry samples from Portugal and analysed their clonal diversity and the resistance genes harboured by these strains. METHODS Ninety-nine retail poultry samples of 10 widely commercialized brands were studied (1999-2001). Samples were enriched and plated on selective media with and without vanco...