Publications by authors named "Ben-Zvi Haim"

Unlabelled: Staphylococcus aureus (SA) is an important pathogen in the pediatric population. Community-acquired SA bacteremia (SAB) may also occur in healthy individuals, yet literature on this matter is scarce. Our study aims to describe patient characteristics, clinical course, and outcomes of healthy children with SAB.

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Invasive fungal diseases significantly impact hemato-oncology pediatric patients, with Aspergillus and Candida being the primary culprits. However, pediatric Alternaria infections remain understudied. This study aims to characterize Alternaria infections in pediatric hemato-oncology cases nationwide.

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Purpose: The prolonged treatment recommended for nocardiosis does not rely on strong evidence. Consequently, some clinicians opt shorter therapy in certain circumstances. We assessed the effectiveness of shorter therapy.

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Article Synopsis
  • Clostridioides difficile infection (CDI) is a major cause of infectious diarrhea, and this study evaluates the effects of early antibiotic treatment on patient outcomes like mortality and hospital stay duration.
  • The study analyzed data from 796 adult CDI patients and found that starting treatment within 24 hours of stool sampling did not significantly improve mortality rates or recurrence compared to later treatment.
  • However, early treatment did lead to a shorter average hospital stay of 6 days compared to 8 days, indicating some benefit in terms of hospital resource use.*
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Introduction: Hemato-oncology patients are vulnerable to bloodstream infections due to immunocompromised state and use of intravascular catheters. Data regarding risk of infective endocarditis (IE) among those with gram-positive bacteremia are limited. We aimed to evaluate the incidence of IE among neutropenic hemato-oncology patients and explore the yield of echocardiogram in this population.

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Background: Influenza and coronavirus disease 2019 (COVID-19) are respiratory diseases with similar modes of transmission. In December 2021, influenza re-emerged after it had been undetected since March 2020 and the Omicron variant replaced the Delta variant. Data directly comparing the two diseases are scarce.

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Article Synopsis
  • - The study investigated the antimicrobial resistance and genetic factors of 138 clinical strains of Nocardia species, revealing a variety of species with differing resistance profiles.
  • - Nocardia cyriacigeorgica was the most prevalent species, with linezolid being effective against all isolates, while resistance often correlated with specific resistance genes or mutations.
  • - Findings suggest that resistance patterns in Nocardia are linked more to species characteristics rather than new mutations or transmission, contributing to a better understanding of the molecular mechanisms behind their antibiotic resistance.
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  • Vaccines play a crucial role in controlling the COVID-19 pandemic, but patients with inflammatory bowel diseases (IBDs) on anti-TNF-α treatments show weaker immune responses after vaccinations.
  • A study involving 319 participants found that while a third dose of the Pfizer/BioNTech vaccine led to significant antibody levels in all groups, those on anti-TNF-α therapies experienced a drop in these levels three months later.
  • Despite no significant adverse effects or disease flare-ups, the lower antibody response after the third dose indicates a potential risk for infections, suggesting that a fourth dose might be necessary for this population.
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We report an outbreak of Candida auris across multiple healthcare facilities in Israel. For the period of May 2014-May 2022, a total of 209 patients with C. auris infection or colonization were identified.

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Article Synopsis
  • The study compared outcomes of Clostridioides difficile infection (CDI) acquired in healthcare settings (HC-CDI) versus those acquired in the community (CA-CDI), focusing on factors like mortality, severity, and recurrence.
  • It analyzed data from 867 hospitalized patients and found that CA-CDI patients had more underlying health issues but similar 30-day mortality rates compared to HC-CDI patients.
  • While there were no significant differences in severity or complications between the two groups, CA-CDI patients experienced a slightly higher recurrence rate within 30 days (4% vs 2%).
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  • This report presents the first national evaluation of two commercial PCR kits for detecting monkeypox virus (MPXV) DNA across multiple laboratories in Israel.
  • The study involved testing standardized samples using the Novaplex and Bio-Speedy kits, comparing their performance against a reliable in-house assay.
  • While all assays demonstrated similar sensitivity in detecting low viral loads, significant differences were noted in their Cq values and relative fluorescence, indicating that direct comparisons may not be accurate for diagnostic purposes.
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Two doses of mRNA SARS-CoV-2 vaccines elicit an attenuated humoral immune response among immunocompromised patients. Our study aimed to assess the immunogenicity of a third dose of the BNT162b2 vaccine among lung transplant recipients (LTRs). We prospectively evaluated the humoral response by measuring anti-spike SARS-CoV-2 and neutralizing antibodies in 139 vaccinated LTRs ~4-6 weeks following the third vaccine dose.

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Background: Herpes simplex encephalitis (HSE) is associated with severe mortality and morbidity. Its incidence is estimated at 1:250 000, and the typical symptomatology of acute disease including headaches, mental state disturbances, confusion, sleepiness, and seizures. The chronic phase of the disease is occasionally characterized by epilepsy and neurological deficits.

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Patients with inflammatory bowel disease (IBD) have a higher incidence of Clostridioides difficile infection (CDI). Previous studies have demonstrated negative clinical outcomes in IBD patients with CDI compared to patients without CDI. The clinical presentation of CDI is indistinguishable from IBD exacerbation, thus posing a frequent clinical dilemma on the role of Clostridioides infection in the testing, diagnosis, and treatment of these patients.

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Blood stream infections (BSIs) are well described in pediatric cardiac intensive care units (PCICU). We noted that postoperative high-risk patients may develop BSI after a preceding clinical event (PCE). The study aim was to investigate whether high-risk patients who developed bacteremia experienced more PCEs than a similar group of high-risk patients.

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Viridans group streptococci (VGS) bloodstream infection (BSI) in neutropenic patients can be a severe complication. A higher prevalence of vancomycin use has been reported due to reduced susceptibility to penicillin. We aimed to assess the impact on mortality of both penicillin minimal inhibitory concentration (MIC) and the use of vancomycin.

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Aim: To investigate the clinical impact of BioFire FilmArray Gastrointestinal Panel (FGP) testing in real-life diarrhoeal episodes of hospitalised paediatric patients.

Methods: Children hospitalised between October 2018 and September 2020 for whom stool specimens for FGP were submitted at the clinician's discretion were retrospectively observed. For each episode, demographics, clinical information and stool tests were collected.

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Aim: This study aimed to describe epidemiological and clinical characteristics of Serratia bacteraemia and to identify factors associated with mortality.

Methods: The microbiology database of Schneider Children's Medical Centre of Israel was examined for Serratia marcescens positive blood cultures, between January 2007 and May 2020. Demographic, clinical and microbial characteristics were analysed.

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Background: Patients with interstitial lung disease (ILD) are at high risk of severe COVID-19 infection. Additionally, their anti-inflammatory and antifibrotic treatment may cause immunosuppression. Nevertheless, their ability to mount an adequate immune response to messenger RNA SARS-CoV-2 vaccines was not evaluated.

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Objective: To evaluate the durability of response 3 months after the third BNT162b2 vaccine in adults aged 60 years and older.

Design: Prospective cohort study.

Setting: Single tertiary centre.

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Patients with inflammatory bowel disease (IBD) treated with anti-tumor-necrosis factor-alpha (TNFα) exhibited lower serologic responses one-month following the second dose of the COVID-19 BNT162b2 vaccine compared to those not treated with anti-TNFα (non-anti-TNFα) or to healthy controls (HCs). We comprehensively analyzed long-term humoral responses, including anti-spike (S) antibodies, serum inhibition, neutralization, cross-reactivity and circulating B cell six months post BNT162b2, in patients with IBD stratified by therapy compared to HCs. Subjects enrolled in a prospective, controlled, multi-center Israeli study received two BNT162b2 doses.

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Immune response to two SARS-CoV-2 mRNA vaccine doses among kidney transplant recipients (KTRs) is limited. We aimed to evaluate humoral and cellular response to a third BNT162b2 dose. In this prospective study, 190 KTRs were evaluated before and ∼3 weeks after the third vaccine dose.

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Data regarding immunogenicity of mRNA severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccines among kidney transplant recipients in the months following vaccination are lacking. We aimed to investigate humoral immune response at 3-4 months post-vaccination among a cohort of kidney transplant recipients, compared with a control group of dialysis patients. Anti-spike antibodies were tested at 1 and 3-4 months after vaccination.

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Objectives: The immunogenicity of two-dose severe acute respiratory syndrome coronavirus 2 vaccine is lower among heart transplant (HTx) recipients, compared with the general population. Our aim was to assess the immunogenicity of a third-dose vaccine in HTx recipients.

Methods: This is a prospective cohort study of HTx recipients who received a third dose of the BNT162b2 vaccine.

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