Molecular epidemiology of carbapenemase-producing Acinetobacter spp. from Israel, 2001-2006: earliest report of bla predating the oldest known bla-positive strains
bioRxiv, ISSN: 2692-8205
2022
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Background Carbapenem-resistant Acinetobacter baumannii (CRAb) is a WHO priority 1 critical pathogen. Despite early emergence of elevated CRAb rates in Israel, limited molecular data from this location are available. We searched for carbapenemases among 198 clinical Acinetobacter spp. from Israel between 2001 and 2006. Methods Strains from 3 archives underwent whole-genome sequencing (Illumina NovaSeq on all, MinION on a subset) and computational analyses: assembly (Unicycler), annotation (prokka), identification (Kraken, rpoB similarity), search for carbapenemases (ResFinder, BLDB curation). Findings A. baumannii (Ab) represented 179 (90·4%) Acinetobacter spp. Eighty-four Ab (46·9%) carried a carbapenemase: 38 (45·2%) blaOXA-72 (blaOXA-24-like); 28 (33·3%) blaOXA-23-like (20 blaOXA-23 and 8 blaOXA-225); 18 (21·5%) blaOXA-58 (16 from 2001-2). Carbapenemase rates increased yearly from 2002 (32%) to 2006 (67%). Eight species of non-baumannii Acinetobacter (NbA) accounted for 19 isolates (9·6%). Two of three A. junii contained blaOXA-58, one of which, Ajun-H1-3, isolated in January 2004, also possessed blaNDM-1. The pNDM-Ajun-H1-3 plasmid matched numerous NDM-positive plasmids reported from 2005 onwards in Acinetobacter spp. as well as Enterobacterales. Interpretation We assessed carbapenemase diversity among Acinetobacter spp. in Israel from 2001-2006. Findings in Ab predate observations elsewhere: rapidly rising carbapenemase rates, driven by blaOXA-23-like and blaOXA-24-like genes replacing blaOXA-58. Among NbA, an A. junii isolated in 2004 carried blaNDM-1, making it the earliest NDM-positive isolate reported to date, preceding those from 2005 in India. Further research into blaNDM’s emergence is warranted, in order to shed light on the evolution and spread of this and other antibiotic-resistance genes. Funding Centre de recherche Charles-Le Moyne; Department of Microbiology and Infectious Diseases, Faculty of Medicine and Health Sciences, Université de Sherbrooke; Fonds de recherche du Québec – Santé; New Frontiers in Research Fund Grant NFRFE-2019-00444; CIFAR-Azrieli Global Scholars Program.
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