1887

Abstract

One hundred and twenty-six epidemiologically sequential, unrelated, carbapenem-resistant Acinetobacter baumannii isolates from nine hospitals in six countries of South America were collected between July 2013 and June 2014. Genes coding for Ambler class D and B carbapenemases were sought by PCR. All isolates were typed using the 3-locus sequence typing and bla OXA-51-like sequence-based typing techniques. The bla OXA-23 gene was recovered in all the participating hospitals and in all the isolates of seven of nine medical centres. The bla OXA-72 gene was only recovered in the two medical centres from Guayaquil city, Ecuador. Trilocus sequence typing revealed the presence of sequence groups SG2, SG4 and SG5. bla OXA-51-like sequence-based typing revealed the presence of bla OXA-132, bla OXA-65, bla OXA-69 and bla OXA-64. Our results showed that the population of carbapenem-resistant A. baumannii in South America was principally associated with ST79, ST25 and ST15 (92 %) and harboured the bla OXA-23 gene mainly. CC2 was not detected.

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2016-10-18
2019-10-19
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