Publications by authors named "Julien Jaubert"

The clinical characteristics and epidemiology of Q fever in the Tropics are poorly described. We performed a retrospective cohort study of hospitalized cases between 2004 and 2017 in Reunion Island. Acute Q fever was defined in presence of a positive serology (phase II IgG ≥ 200 and phase II IgM ≥ 50), or a seroconversion (4-fold increase in phase II IgG between paired samples), or a positive PCR (blood or serum).

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  • The study focused on gonococcal arthritis (GA), a rare but significant extra-genital manifestation of gonococcal infection, analyzing cases in Reunion Island from 2008 to 2020.
  • A total of 58 cases were identified, predominantly among older men, with most cases linked to recent travel abroad, and while only a small percentage presented genital symptoms, many had other extra-genital manifestations, especially skin lesions.
  • The research highlighted the importance of early diagnosis and effective treatment to prevent joint damage, noting that PCR testing can enhance detection in cases where cultures are negative.
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Background: Q fever (Coxiella burnetii infection) has been associated with adverse perinatal outcomes. After investigating the obstetrical importance of Q fever on Reunion island and demonstrating an association between incident Q fever and miscarriage, we conducted a cross-sectional serosurvey to assess the prevalence of Coxiella burnetii infection among parturient women.

Methods: Between January 9 and July 24, 2014, within the level-4 maternity of Saint Pierre hospital and the level-1 maternity of Le Tampon, we proposed to screen all parturient women for Coxiella burnetii serology.

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Background: Q fever has been associated with perinatal complications. We conducted a prospective follow-up study to assess both the incidence of adverse pregnancy outcomes (APOs) associated with Coxiella burnetii infection and the contribution of Q fever to APOs.

Methods: Between May 1 and October 31, 2013, within the regional perinatal health care centre of Saint Pierre, Reunion island, we investigated unexplained miscarriages, stillbirths, preterm births or small-for-gestational age children.

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  • - The study aimed to assess the exposure to Hepatitis E virus (HEV) on Reunion Island using a serosurvey among blood donors, analyzing archived frozen sera from a past cohort.
  • - Results showed raw and weighted seroprevalences of HEV at 9.01% and 6.73%, respectively, with higher seropositivity observed in older individuals and males compared to females.
  • - Findings suggest that Reunion Island has low endemicity for HEV, with spatial variability linked to living near pig farms, hinting at potential environmental contamination as a risk factor.
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Objective: Murine typhus has been increasingly reported on Reunion island, Indian ocean, following documentation of eight autochthonous infections in 2012-2013. We conducted a serosurvey to assess the magnitude of the seroprevalence of rickettsioses in the population. Two hundred and forty-one stored frozen sera taken from the 2009 Copanflu-RUN cohort were analysed using an immunofluorescence assay allowing to distinguish typhus group (TGR) and spotted fever group Rickesttsiae (SFGR).

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  • * Results showed a weighted seroprevalence of 6.81%, with no infections found in individuals under 20, indicating exposure isn't influenced by age or gender.
  • * Higher exposure rates were found in areas with ruminant farms, suggesting that Q fever is endemic to the island with spatial distribution linked to agriculture.
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Background: Patients experiencing severe asthma exacerbations have a poorer quality of life and an increase in morbidity and mortality. Viruses are frequently involved in asthma exacerbations.

Objective: To determine the value of measuring serum IgG concentrations in asthma exacerbations and assess their link with viral infections in patients hospitalized for asthma.

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In South Western Indian ocean (IO), Extended-Spectrum β-Lactamase producing Enterobacteriaceae (ESBL-E) are a main public health issue. In livestock, ESBL-E burden was unknown. The aim of this study was estimating the prevalence of ESBL-E on commercial farms in Reunion, Mayotte and Madagascar and genes involved.

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We evaluated the Fast track Diagnostics (FTD) Pneumocystis PCR kit, targeting the mitochondrial large subunit ribosomal RNA gene (mtLSU rRNA) of Pneumocystis jirovecii (P. jirovecii). A hundred and thirty-three patients were prospectively enrolled.

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  • Leptospirosis, a disease primarily linked to rats, is a significant health concern in Seychelles, with a reported incidence rate of 54.6 cases per 100,000 inhabitants over a study period of one year.* -
  • Testing revealed only 7.7% of rats carried the bacteria, with Rattus norvegicus showing a much higher prevalence (52.9%) than Rattus rattus (4.4%), indicating that rats may not be the primary source of infection for humans in this region.* -
  • The study points to gaps in current prevention strategies and suggests the need for reevaluating the identification of main reservoirs to better control leptospirosis transmission in Seychelles.*
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We describe two serious Trametes polyzona pulmonary infections, which occurred in Réunion Island, in critically ill patients. The identification was performed using sequencing of the internal transcribed spacer region of ribosomal DNA and D1/D2 region of 28S rDNA. In one case, the significance of T.

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The 2016 seasonal influenza in Réunion in the southern hemisphere, was dominated by influenza A(H1N1)pdm09 (possibly genogroup 6B.1). An estimated 100,500 patients with acute respiratory infection (ARI) consulted a physician (cumulative attack rate 11.

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Objectives: While the prevalence of Group B streptococcus (GBS) colonization is important, little is known about invasive GBS (iGBS) disease in tropical areas. Our objective was to assess the burden of iGBS disease among non-pregnant adults.

Methods: A prospective hospital-based study of all non-pregnant adult patients with iGBS disease was conducted between January and December 2011 in Saint Pierre, Réunion Island, to assess its cumulative incidence rate (CIR).

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This report describes the first known laboratory-confirmed case of Mycobacterium fortuitum breast infection related to the hospital water supply. The source of the M fortuitum infection was identified by repetitive extragenic palindromic sequence-based polymerase chain reaction genotyping. In addition, we discuss appropriate infection control measures to minimize patient exposure to waterborne pathogens, in particular, in the context of nontuberculous mycobacteria, which is difficult to eradicate from the water supply network.

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