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At least 19 recordsLinked to original sources
PubMed2024

Antibiotic resistance genotype, phenotype, and clinical outcomes in patients with Gram-negative infections at Rabin Medical Center in Israel.

UNLABELLED: Antibiotic resistance is a major cause of morbidity and mortality. However, a better understanding of the relationship between bacterial genetic markers, phenotypic resistance, and clinical outcomes is needed. We performed whole-genome sequencing on five medically important pathogens (Acinetobacter baumannii, Enterobacter cloacae, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa) to investigate how resistance genes impact patient outcomes. A total of 168 isolates from 162 patients with Gram-negative infections admitted to Beilinson Hospital at Rabin Medical Center in Israel were included for final analysis. Genomes were analyzed for resistance determinants and correlated with microbiologic and clinical data. Thirty-day mortality from time of culture was 26.5% (43/162). Twenty-nine patients had carbapenem-resistant isolates (29/168, 17.2%), while 63 patients had multidrug-resistant isolates (63/168, 37.5%). Albumin levels were inversely associated with mortality and length of stay, while arrival from a healthcare facility and cancer chemotherapy predicted having a multidrug-resistant isolate. Sequencing revealed possible patient-to-patient transmission events. blaCTX-M-15 was associated with multidrug-resistance in E. coli (OR = 3.888, P = 0.023) on multivariate analysis. Increased blaOXA-72 copy number was associated with carbapenem-resistance in A. baumannii (P = 0.003) and meropenem minimum inhibitory concentration (P = 0.005), yet carbapenem-resistant isolates retained sensitivity to cefiderocol and sulbactam-durlobactam. RJX84154 was associated with multidrug-resistance across all pathogens (P = 0.0018) and in E. coli (P = 0.0024). Low albumin levels were associated with mortality and length of stay in this sample population. blaCTX-M-15 was correlated with multidrug-resistance in E. coli, and blaOXA-72 depth predicted meropenem minimum inhibitory concentration in A. baumannii. RJX84154 may play a role in multidrug-resistance. IMPORTANCE: While there have been several studies that attempt to find clinical predictors of outcomes in patients hospitalized with bacterial infections, less has been done to combine clinical data with genomic mechanisms of antibiotic resistance. This study focused on a hospitalized patient population in Israel with infections due to medically important bacterial pathogens as a way to build a framework that would unite clinical data with both bacterial antibiotic susceptibility and genomic data. Merging both clinical and genomic data allowed us to find both bacterial and clinical factors that impact certain clinical outcomes. As genome sequencing of bacteria becomes both rapid and commonplace, near real-time monitoring of resistance determinants could help to optimize clinical care and potentially improve outcomes in these patients.

Humans↗
PubMed2026

Genomic and Epidemiologic Insights into Ongoing Measles Outbreak, Israel, 2025-2026.

An ongoing measles outbreak in Israel, involving ≈3,200 cases and 16 deaths, threatens the country's measles elimination status and reflects declining vaccination rates observed globally and within Israel. Epidemiologic investigations supported by sequencing suggest that a single importation triggered the outbreak, underscoring the critical role of rapid genomic surveillance in outbreak control.

Measles↗
PubMed2026

Extended-Spectrum β-Lactamase-Producing Enterobacterales in Free-Roaming Cats in Israel.

Amid the rising prevalence of antimicrobial resistance (AMR), attention is increasingly directed toward investigating additional factors that may contribute to or mediate its development, among which companion animals have emerged as a potential reservoir and transmission interface. Despite this, the contribution of free-roaming animal populations living in proximity to humans and domestic animals has yet to be thoroughly investigated worldwide. Accordingly, this study aimed to determine the prevalence and antimicrobial resistance patterns of extended-spectrum β-lactamase (ESBL)-producing Enterobacterales in free-roaming cats in Israel. Rectal swabs were collected from 214 free-roaming cats admitted to two veterinary clinics between 2023 and 2024. ESBL-PE were recovered from 51 cats (23.8%), yielding 61 isolates, which were tested for susceptibility to multiple antimicrobials. Eleven bacterial species were identified, with Escherichia coli being the most frequently recovered (62.3%, 38/61). Nine purposively selected E. coli isolates underwent whole-genome sequencing (WGS). Multidrug resistance (MDR), defined as non-susceptibility to at least one agent in three or more antimicrobial categories, was observed in 72.1% (44/61) of isolates, and four isolates were carbapenemase-producing Enterobacterales (CPE). These findings suggest that free-roaming cats may serve as a previously overlooked 'One Health' link, possibly connecting environmental contamination to human and animal health risks.

antimicrobial resistance↗