Naïm Ouldali

ORCID: 0000-0003-4996-9640
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About
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Research Areas
  • Pneumonia and Respiratory Infections
  • Respiratory viral infections research
  • Kawasaki Disease and Coronary Complications
  • COVID-19 Clinical Research Studies
  • Bacterial Infections and Vaccines
  • SARS-CoV-2 and COVID-19 Research
  • Emergency and Acute Care Studies
  • Pneumocystis jirovecii pneumonia detection and treatment
  • Respiratory and Cough-Related Research
  • COVID-19 Impact on Reproduction
  • Viral gastroenteritis research and epidemiology
  • Mechanical Circulatory Support Devices
  • Influenza Virus Research Studies
  • Vasculitis and related conditions
  • Streptococcal Infections and Treatments
  • Hemoglobinopathies and Related Disorders
  • Coronary Artery Anomalies
  • Inflammasome and immune disorders
  • Autoimmune and Inflammatory Disorders Research
  • Antibiotic Resistance in Bacteria
  • COVID-19 and healthcare impacts
  • Antibiotic Use and Resistance
  • Tracheal and airway disorders
  • Adolescent and Pediatric Healthcare
  • Child and Adolescent Health

Hôpital Robert-Debré
2016-2025

Inserm
2017-2025

Université Paris Cité
2017-2025

Infection, Anti-microbiens, Modélisation, Evolution
2023-2025

Centre Hospitalier Universitaire Sainte-Justine
2022-2025

Association Clinique et Thérapeutique Infantile du Val de Marne
2018-2025

Evaluation et recherche en services et politiques en santé pour les populations vulnérables
2017-2025

Assistance Publique – Hôpitaux de Paris
2018-2025

Sorbonne Paris Cité
2018-2025

Société Française de Cardiologie
2020-2024

Current data suggest that COVID-19 is less frequent in children, with a milder course. However, over the past weeks, an increase number of children presenting to hospitals greater Paris region phenotype resembling Kawasaki disease (KD) has led alert by French national health authorities. Multicentre compilation patients KD since April 2020, associated detection severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ('Kawa-COVID-19'). A historical cohort 'classical' served as...

10.1136/annrheumdis-2020-217960 article EN other-oa Annals of the Rheumatic Diseases 2020-06-11
Naïm Ouldali Julie Toubiana Denise Antona Étienne Javouhey Fouad Madhi and 95 more Mathie Lorrot Pierre-Louis Léger Caroline Galeotti Caroline Claude Arnaud Wiedemann Noémie Lachaume Caroline Ovaert Morgane Dumortier Jean‐Emmanuel Kahn Alexis Mandelcwajg Lucas Percheron Blandine Biot Jeanne Bordet Marie‐Laure Girardin David Dawei Yang Marion Grimaud Mehdi Oualha Slimane Allali Fanny Bajolle Constance Beyler Ulrich Meinzer Michaël Levy Ana-Maria Paulet Yaël Levy Robert Cohen Alexandre Bélot François Angoulvant Cinthia Rames Aurélie Donzeau Sophie Léty Cristian Fedorczuk Marion Lajus Philippe Bensaïd Yacine Laoudi Charlotte Pons Camille Beaucourt Loïc de Pontual Camille Aupiais Alain Lefèvre‐Utile Muriel Richard Etienne Goisque Xavier Iriart Olivier Brissaud Marion Bailhache Pierre Segretin Julie Molimard Marie-Clothilde Orcel Grégoire Benoist Elsa Amouyal Margaux Guerder Robin Pouyau Jean-Marie De Guillebon De Resnes Ellia Mezgueldi Fleur Cour‐Andlauer Côme Horvat Pierre Poinsot Cécile Frachette Antoine Ouziel Yves Gillet Catherine Barrey Jacques Brouard Caroline Faucon Henri Giniès Vathanaksambath Ro Narcisse Elanga Vincent Gajdos Romain Basmaci Névéna Danékova Hadile Mutar Sébastien Rouget Xavier Torterüe Elodie Nattes Isabelle Hau Sandra Biscardi Houmam El Jurdi Camille Jung Ralph Epaud Céline Delestrain Adèle Carlier‐Gonod Camille Chavy Benoît Colomb Stéphanie Litzler-Renault Denis S. Semama Frédéric Huet Mayssa Sarakbi Guillaume Mortamet C. Bost-Bru Charlotte Kevorkian‐Verguet Matthias Lachaud Caroline Vinit V. Hentgen Pascal Leroux Valérie Bertrand Caroline Parrod Irina Craiu

<h3>Importance</h3> Multisystem inflammatory syndrome in children (MIS-C) is the most severe pediatric disease associated with acute respiratory coronavirus 2 infection, potentially life-threatening, but optimal therapeutic strategy remains unknown. <h3>Objective</h3> To compare intravenous immunoglobulins (IVIG) plus methylprednisolone vs IVIG alone as initial therapy MIS-C. <h3>Design, Setting, and Participants</h3> Retrospective cohort study drawn from a national surveillance system...

10.1001/jama.2021.0694 article EN JAMA 2021-02-02

Abstract A time series analysis of 871 543 pediatric emergency visits revealed that the coronavirus disease 2019 (COVID-19) lockdown and school closures were associated with a significant decrease in infectious diseases disseminated through airborne or fecal–oral transmission: common cold, gastroenteritis, bronchiolitis, acute otitis. No change was found for urinary tract infections.

10.1093/cid/ciaa710 article EN other-oa Clinical Infectious Diseases 2020-06-02

<h3>Importance</h3> An association between pneumococcal nasopharyngeal carriage and invasive disease (IPD) has been previously established. However, it is unclear whether the decrease in IPD incidence observed after implementation of nonpharmaceutical interventions (NPIs) during COVID-19 pandemic was associated with concomitant changes respiratory viral infections. <h3>Objective</h3> To assess NPIs examine their temporal rate infections (specifically syncytial virus [RSV] influenza cases)...

10.1001/jamanetworkopen.2022.18959 article EN cc-by-nc-nd JAMA Network Open 2022-06-28

In a 15-year pediatric time-series analysis, we showed rise of invasive Group A streptococcal (iGAS) infections since October 2022, mainly involving pleural empyema, simultaneously to respiratory virus outbreak. Physicians should be aware this increased risk iGAS infections, especially in settings with intense viruses' circulation.

10.1093/ofid/ofad188 article EN cc-by-nc-nd Open Forum Infectious Diseases 2023-04-06

Initial reports on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections in children suggested that very young age and comorbidities may increase risk of evolution, but these findings remained to be confirmed. We aimed analyze the clinical spectrum hospitalized pediatric SARS-CoV-2 infection predictors disease evolution. conducted a French national prospective surveillance with infection. included all confirmed 60 hospitals during February 15 June 1, 2020. The main outcome...

10.1542/peds.2020-023432 article EN PEDIATRICS 2020-12-16
Naïm Ouldali Corinne Lévy Emmanuelle Varon Stéphane Bonacorsi Stéphane Béchet and 95 more Robert Cohen François Angoulvant Marie Noelle Adam Ilhem Agha-Mir Sylvia Akitani Marlène Amara Guillaume Arlet Valérie Asensio Fanny Autret Julien Baleine Guilène Barnaud A. Barrans Katia Barsotti Romain Basmaci Nathalie Bednarek Abdelmalek Belgaïd Grégoire Benoist Anne Bertrou Hélène Biessy Valérie Biran Véronique Blanc Elodie Blondel Pascal Bolot Claude Bosi Sophie Boyer Jacques Brouard Bernadette Cartier-Riviere F. Cascarigny C. Cattoën Anne Chacé Martin Chalumeau J.-M. Chamouilli C. Chaplain Sylvie Charachon Anne Charbonneau M. Chéron Bertrand Chevallier F. Chomienne G. Courouble Névéna Danékova Anne Dao-Dubremetz Patrick Daoud Stéphane Dauger Christophe de Champs Danièle De Luca André De Briel Marion Decobert Delphine Desbois V. Despert Rodrigue Dessein Emmanuelle Dessioux Katherine Dieckmann Marie Aliette Dommergues Elodie Dorangeon Florence Doucet‐Populaire François Dubos G Dubourg Muriel Dufour Véronique Duval Laurence Eitenschenck Ralph Epaud F. Evreux Didier Eyer Stéphanie Eyssette-Gayraud Cibele Dal Fabbro Albert Faye Agnès Ferroni Mariano Fos Serge Gallet Caroline Garandeau Hélène Garrec Jean Gaschignard J. Gaudelus Laurent Geniez Florent Girard Catherine Glastre Isabelle Glatz Alain Goudeau Anne Gougeon Jollivet P Goumy François Gouraud Alain Goux Anna Grando E. Grimprel Olivier Guilluy G. Guyon C. Guyot H. Haas Isabelle Haegy-Doehring Muriel Halna Farida Hamdad Séverine Haouisee Christian Hervé Rachel Heyman Guenais Anne-Cécile Hochart

10.1016/s1473-3099(18)30349-9 article EN The Lancet Infectious Diseases 2018-07-23

Abstract To assess the relevance of systematic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) screening all children admitted to hospital, we conducted a prospective multicenter study including 438 consecutive hospitalized children. A symptom-based SARS-CoV-2 testing strategy failed identify 45% (95% confidence interval, 24%–68%) infected by SARS-CoV-2. limit intrahospital transmission, hospital should be considered.

10.1093/cid/ciaa1044 article EN other-oa Clinical Infectious Diseases 2020-07-22

Covid-19 pandemic control has imposed several non-pharmaceutical interventions (NPIs). Strict application of these measures had a dramatic reduction on the epidemiology infectious diseases. As is ongoing for more than 2 years, some have been removed, mitigated, or less well applied. The aim this study to investigate trends pediatric ambulatory diseases before and up two years after onset pandemic.We conducted prospective surveillance in France with 107 pediatricians specifically trained From...

10.1016/j.lanepe.2022.100497 article EN cc-by-nc-nd The Lancet Regional Health - Europe 2022-08-23
Naïm Ouldali Haleh Bagheri Francesco Salvo Denise Antona Alexandre Pariente and 95 more Claire LeBlanc Martine Tebacher Joëlle Micallef Yaël Levy Robert Cohen Étienne Javouhey Brigitte Bader‐Meunier Caroline Ovaert Sylvain Renolleau Véronique Hentgen Isabelle Koné‐Paut Nina Deschamps Loïc de Pontual Xavier Iriart Christelle Gras-Le Guen François Angoulvant Alexandre Bélot Aurélie Donzeau Layal El Aridi Sophie Léty B. Leboucher Agnes Baur Lucas Jeusset Maëlle Sélégny Cristian Fedorczuk Marion Lajus Philippe Bensaïd Yacine Laoudi Charlotte Pons Anne-Cécile Robert Camille Beaucourt Loïc de Pontual Muriel Richard Etienne Goisque Xavier Iriart Olivier Brissaud Pierre Segretin Julie Molimard Marie-Clothilde Orecel Gregoire Benoit Lucille Bongiovanni Margaux Guerder Robin Pouyau Jean-Marie De Guillebon De Resnes Ellia Mezgueldi Fleur Cour‐Andlauer Côme Horvat Pierre Poinsot Cécile Frachette Antoine Ouziel Yves Gillet Catherine Barrey Jacques Brouard F. Villedieu Vathanaksambath Ro Narcisse Elanga Vincent Gajdos Romain Basmaci Hadile Mutar Sébastien Rouget Elodie Nattes Isabelle Hau Sandra Biscardi Houmam El Jurdi Camille Jung Denis S. Semama Frédéric Huet Anne-Marie Zoccarato Mayssa Sarakbi Guillaume Mortamet C. Bost-Bru Joachim Bassil Caroline Vinit Véronique Hentgen Pascal Leroux Valérie Bertrand Caroline Parrod Irina Craiu Isabelle Koné‐Paut Philippe Durand Pierre Tissiere Caroline Claude Guillaume Morelle Tamazoust Guiddir Charlotte Borocco Frédérique Delion Camille Guillot Stéphane Leteurtre François Dubos Mylene Jouancastay Alain Martinot Valentine Voeusler Jeanne Languepin Nathalie Garrec A. Chalvon Demersay

Multisystem inflammatory syndrome in children (MIS-C) is the most severe clinical entity associated with pediatric SARS-CoV-2 infection a putative role of spike protein into immune system activation. Whether COVID-19 mRNA vaccine can induce this complication unknown. We aimed to assess risk hyper-inflammatory following children.

10.1016/j.lanepe.2022.100393 article EN cc-by The Lancet Regional Health - Europe 2022-04-29

Respiratory viruses have been previously suspected to trigger invasive pneumococcal disease (IPD). After progressive non-pharmaceutical interventions (NPI) lifting, an unusual RSV outbreak has observed in the Fall 2021, raising concerns about possible consequences on IPD. We aimed analyse evolution of IPD incidence across age-groups since NPI and its temporal association with respiratory viral infections.We conducted a time-series analysis using 1) population-based surveillance data 2)...

10.1016/j.lana.2023.100448 article EN cc-by-nc-nd The Lancet Regional Health - Americas 2023-02-15

Respiratory syncytial virus (RSV) is the leading cause of lower-respiratory-tract infection in children. Nirsevimab, a monoclonal antibody against RSV, was implemented few countries September 2023. However, its post-license effectiveness ambulatory care settings unknown. We aimed to assess nirsevimab RSV-bronchiolitis outpatients aged <12 months.

10.1016/j.lanepe.2024.101007 article EN cc-by The Lancet Regional Health - Europe 2024-07-23

Importance Henoch-Schönlein purpura (HSP) is the most common type of vasculitis in children. The factors that trigger disease are poorly understood. Although several viruses and seasonal bacterial infections have been associated with HSP, differentiating specific associations these pathogens onset HSP remains a challenge due to their overlapping patterns. Objective To analyze role epidemiology HSP. Design, Setting, Participants This cohort study comprised an interrupted time-series analysis...

10.1001/jamanetworkopen.2024.5362 article EN cc-by-nc-nd JAMA Network Open 2024-04-05

Epidemiological surveillance of nasopharyngeal pneumococcal carriage is important for monitoring serotype distribution and antibiotic resistance, particularly before after the implementation conjugate vaccines (PCVs). With a prospective study in France, we aimed to analyze dynamics carriage, susceptibility children aged 6 24 months who had acute otitis media between 2001 2022 with focus on late PCV13 period from May 2014 July 2022. Trends were analyzed segmented linear regression...

10.3390/antibiotics12061020 article EN cc-by Antibiotics 2023-06-06

After the implementation of nirsevimab in 2023 France as compared with 2022–2023, we found a 52.7%, (95% CI [46.4–58.9])decrease all-cause bronchiolitis children &amp;lt;3 months lowest number cases this population since 2017.

10.1093/jpids/piae051 article EN Journal of the Pediatric Infectious Diseases Society 2024-05-22

Importance Numerous studies have provided evidence for the negative associations of COVID-19 pandemic with mental health, but data on use psychotropic medication in children and adolescents after onset are lacking. Objective To assess rates trends prescribing before over 2 years France. Design, Setting, Participants This cross-sectional study used nationwide interrupted time-series analysis outpatient drug dispensing from IQVIA X-ponent database. All 8 839 143 prescriptions dispensed to (6...

10.1001/jamanetworkopen.2024.7965 article EN cc-by-nc-nd JAMA Network Open 2024-04-23

Many antibiotics are prescribed inappropriately in pediatric emergency departments (PEDs), but little data available these settings about effective interventions based on guidelines that follow the antimicrobial stewardship principle. Our aim was to assess impact of implementing 2011 national antibiotic prescriptions for acute respiratory tract infection (ARTI) PEDs.We conducted a multicentric, quasiexperimental, interrupted time series analysis prospectively collected electronic from 7...

10.1093/cid/cix590 article EN Clinical Infectious Diseases 2017-07-04

Abstract We aimed to assess the invasive disease potential of non-PCV13 serotypes after implementation this vaccine. Most had low potential. Among with highest (12F, 24F, 38, 8, 33F, 22F, and 10A), all but 24F 38 were included in PCV20.

10.1093/cid/ciaa917 article EN Clinical Infectious Diseases 2020-06-27
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