Emerging extended-spectrum β-lactamases in Proteus mirabilis

Laura Pagani, Roberta Migliavacca, Lucia Pallecchi, Cecilia Matti, Ernesto Giacobone, Gianfranco Amicosante, Egidio Romero, Gian Maria Rossolini

Research output: Contribution to journalArticlepeer-review


β-Lactamase production was detected in 147 (52%) of 282 consecutive nonduplicate Proteus mirabilis isolates obtained over a 1-year period from the S. Matteo Hospital of Pavia (northern Italy). Seventy isolates (48% of the β-lactamase producers) were found to produce extended-spectrum β-lactamases (ESBLs), identified as PER-1 (first report in this species) and TEM-52 in 52 and 18 isolates, respectively. Analysis of clonal diversity of the ESBL producers suggested different spreading patterns for the two ESBL determinants.

Original languageEnglish
Pages (from-to)1549-1552
Number of pages4
JournalJournal of Clinical Microbiology
Issue number4
Publication statusPublished - 2002

ASJC Scopus subject areas

  • Microbiology
  • Microbiology (medical)


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