Enterobacteriaceae isoladas da cavidade bucal de trabalhadores de hospital oncológico do Centro-Oeste brasileiroc

Translated title of the contribution: Enterobacteriaceae isolates from the oral cavity of workers in a Brazilian oncology hospital

Lara Stefânia Netto de Oliveira Leão-Vasconcelos*, Ana Beatriz Mori Lima, Dayane de Melo Costa, Larissa Oliveira Rocha-Vilefort, Ana Claúdia Alves de Oliveira, Nádia Ferreira Gonçalves, José Daniel Gonçalves Vieira, Marinésia Aparecida Prado-Palos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


The evaluation of workers as potential reservoirs and disseminators of pathogenic bacteria has been described as a strategy for the prevention and control of healthcare-associated infections (HAIs). The aim of this study was to evaluate the presence of Enterobacteriaceae in the oral cavity of workers at an oncology hospital in the Midwest region of Brazil, as well as to characterize the phenotypic profile of the isolates. Saliva samples of 294 workers from the hospital’s healthcare and support teams were collected. Microbiological procedures were performed according to standard techniques. Among the participants, 55 (18.7%) were colonized by Enterobacteriaceae in the oral cavity. A total of 64 bacteria were isolated, including potentially pathogenic species. The most prevalent species was Enterobacter gergoviae (17.2%). The highest rates of resistance were observed for β-lactams, and 48.4% of the isolates were considered multiresistant. Regarding the enterobacteria isolated, the production of ESBL and KPC was negative. Nevertheless, among the 43 isolates of the CESP group, 51.2% were considered AmpC β-lactamase producers by induction, and 48.8% were hyper-producing mutants. The significant prevalence of carriers of Enterobacteriaceae and the phenotypic profile of the isolates represents a concern, especially due to the multiresistance and production of AmpC β-lactamases.

Translated title of the contributionEnterobacteriaceae isolates from the oral cavity of workers in a Brazilian oncology hospital
Original languagePortuguese
Pages (from-to)121-127
Number of pages7
JournalRevista do Instituto de Medicina Tropical de Sao Paulo
Issue number2
Publication statusPublished - 2015
Externally publishedYes


  • Beta-lactamases
  • Carriers
  • Enterobacteriaceae
  • Multidrug-resistant


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