Houria Belabbès

ORCID: 0000-0002-8883-0345
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About
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Research Areas
  • Pneumonia and Respiratory Infections
  • Bacterial Infections and Vaccines
  • Antibiotic Resistance in Bacteria
  • Pneumocystis jirovecii pneumonia detection and treatment
  • Streptococcal Infections and Treatments
  • Antibiotic Use and Resistance
  • Infective Endocarditis Diagnosis and Management
  • Antimicrobial Resistance in Staphylococcus
  • Neonatal and Maternal Infections
  • Bacterial Identification and Susceptibility Testing
  • Antibiotics Pharmacokinetics and Efficacy
  • Nail Diseases and Treatments
  • Respiratory viral infections research
  • Nosocomial Infections in ICU
  • Tuberculosis Research and Epidemiology
  • Infectious Diseases and Tuberculosis
  • Urinary Tract Infections Management
  • Enterobacteriaceae and Cronobacter Research
  • Gallbladder and Bile Duct Disorders
  • Microbial infections and disease research
  • Neonatal and fetal brain pathology
  • Otolaryngology and Infectious Diseases
  • Dermatology and Skin Diseases
  • Vibrio bacteria research studies
  • Leprosy Research and Treatment

University of Hassan II Casablanca
2015-2023

Centre Hospitalier Universitaire Ibn Rochd
2013-2023

Stephanie W. Lo Rebecca A. Gladstone Andries J. van Tonder John A. Lees Mignon du Plessis and 84 more Rachel Benisty Noga Givon‐Lavi Paulina A. Hawkins Jennifer Cornick Brenda Kwambana-Adams Pierra Y. Law Pak‐Leung Ho Martín Antonio Dean Everett Ron Dagan Anne von Gottberg Keith P. Klugman Lesley McGee Robert F. Breiman Stephen D. Bentley Abdullah Brooks Alejandra Corso Alexander Davydov Alison J. Maguire Andrew J. Pollard Anmol Kiran Anna Skoczyńska Benild Moiane Bernard Beall Betuel Sigaúque David M. Aanensen Deborah Lehmann Diego Faccone Ebenezer Foster-Nyarko Ebrima Bojang Egorova Ea Е. А. Воропаева Eric Sampane-Donkor Ewa Sadowy Godfrey Bigogo Hélio Mucavele Houria Belabbès Idrissa Diawara Jennifer C. Moïsi Jennifer R. Verani Jeremy D. Keenan Jyothish Bhai Kedibone Ndlangisa Khalid Zerouali K L Ravikumar Leonid Titov Linda de Gouveia Maaike Alaerts Margaret Ip Maria Cristina de Cunto Brandileone Md Hasanuzzaman Metka Paragi Michele Nurse-Lucas Mushal Ali Naima Elmdaghri Nicholas J. Croucher Nicole Wolter Nurit Porat Özgen Köseoğlu Eser Patrick Eberechi Akpaka Paul Turner Paula Gagetti Peggy-Estelle Tientcheu Philip E. Carter Rafal Mostowy Rama Kandasamy Rebecca Ford Rebecca Henderson Roly Malaker Sadia Shakoor Samanta Cristine Grassi Almeida Samir K. Saha Sanjay Doiphode Shabir A. Madhi Shamala Devi Sekaran Somporn Srifuengfung Stephen Obaro Stuart C. Clarke Susan Nzenze Tamara Kastrin Theresa J. Ochoa Balaji Veeraraghavan Waleria Hryniewicz Yulia Urban

Invasive pneumococcal disease remains an important health priority owing to increasing incidence caused by pneumococci expressing non-vaccine serotypes. We previously defined 621 Global Pneumococcal Sequence Clusters (GPSCs) analysing 20 027 isolates collected worldwide and from published genomic data. In this study, we aimed investigate the lineages behind predominant serotypes, mechanism of serotype replacement in disease, as well major contributing invasive post-vaccine era their...

10.1016/s1473-3099(19)30297-x article EN cc-by The Lancet Infectious Diseases 2019-06-10

The purpose of this study was to compare the incidence rate invasive pneumococcal disease, rates antibiotic resistance and serotype distribution among children ≤5 years old before after PCVs introduction in Casablanca, Morocco.This conducted at Ibn Rochd University Hospital Centre Casablanca during two periods encompassing pre-and post-implementation PCVs, respectively from January 2007 October 2010 2011 December 2014. All non-duplicate S. pneumoniae isolates recovered were included.There...

10.1016/j.ijid.2015.09.019 article EN cc-by-nc-nd International Journal of Infectious Diseases 2015-10-08
Joshua C D'Aeth Mark PG van der Linden Lesley McGee Hermı́nia de Lencastre Paul Turner and 94 more Jae-Hoon Song Stephanie W. Lo Rebecca A. Gladstone Raquel Sá‐Leão Kwan Soo Ko William P. Hanage Robert F. Breiman Bernard Beall Stephen D. Bentley Nicholas J. Croucher Alejandra Corso Diego Faccone Paula Gagetti Abdullah Brooks Md Hasanuzzaman Roly Malaker Samir K. Saha Alexander Davydov Leonid Titov Maria Cristina de Cunto Brandileone Samanta Cristine Grassi Almeida Margaret Ip Pak‐Leung Ho Pierra Y. Law Chunjiang Zhao Hui Wang Jeremy D. Keenan Eric Sampane-Donkor Balaji Veeraraghavan Geetha Nagaraj KL Ravikumar Noga Givon‐Lavi Nurit Porat Rachel Benisty Ron Dagan Godfrey Bigogo Jennifer R. Verani Anmol Kiran Dean Everett Jennifer Cornick Maaike Alaerts Shamala Devi Sekaran Stuart C. Clarke Houria Belabbès Idrissa Diawara Khalid Zerouali Naima Elmdaghri Benild Moiane Betuel Sigaúque Hélio Mucavele Andrew J. Pollard Rama Kandasamy Philip E. Carter Stephen Obaro Sadia Shakoor Deborah Lehmann Rebecca Ford Theresa J. Ochoa Anna Skoczyńska Ewa Sadowy Waleria Hryniewicz Sanjay Doiphode Egorova Ea Е. А. Воропаева Yulia Urban Metka Paragi Tamara Kastrin Anne von Gottberg Kedibone Ndlangisa Linda de Gouveia Mignon du Plessis Mushal Ali Nicole Wolter Shabir A. Madhi Susan Nzenze Somporn Srifuengfung Brenda Kwambana-Adams Ebenezer Foster-Nyarko Ebrima Bojang Martín Antonio Peggy-Estelle Tientcheu Jennifer C. Moïsi Michele Nurse-Lucas Patrick Eberechi Akpaka Özgen Köseoğlu Eser Alison J. Maguire David M. Aanensen Leon J. Bentley Jyothish Bhai Rafal Mostowy John A. Lees Keith P. Klugman Paulina A. Hawkins David Cleary

Multidrug-resistant Streptococcus pneumoniae emerge through the modification of core genome loci by interspecies homologous recombinations, and acquisition gene cassettes. Both occurred in otherwise contrasting histories antibiotic-resistant S. lineages PMEN3 PMEN9. A single clade spread globally, evading vaccine-induced immunity frequent serotype switching, whereas locally circulating PMEN9 clades independently gained resistance. repeatedly integrated Tn 916 -type 1207.1 elements,...

10.7554/elife.67113 article EN public-domain eLife 2021-07-14
Rebecca A. Gladstone Lotta Siira Ola Brynildsrud Didrik F. Vestrheim Paul Turner and 86 more Stuart C. Clarke Somporn Srifuengfung Rebecca Ford Deborah Lehmann Egorova Ea Е. А. Воропаева Gunnsteinn Haraldsson Karl G. Kristinsson Lesley McGee Robert F. Breiman Stephen D. Bentley Carmen Sheppard Norman K. Fry Jukka Corander Maija Toropainen Anneke Steens Patrick Eberechi Akpaka Krow Ampofo Martín Antonio Balaji Veeraraghavan Bernard Beall Houria Belabbès Rachel Benisty Godfrey Bigogo Abdullah Brooks Philip E. Carter Jennifer Cornick Alejandra Corso Maria Cristina de Cunto Brandileone Samanta Cristine Grassi Almeida Nicholas J. Croucher Ron Dagan Alexander Davydov Idrissa Diawara Sanjay Doiphode Mignon du Plessis Naima Elmdaghri Özgen Köseoğlu Eser Dean Everett Diego Faccone Paula Gagetti Noga Givon‐Lavi Md Hasanuzzaman Paulina A. Hawkins Waleria Hryniewicz Kristina G. Hultén Margaret Ip Aurélie Kapusta Rama Kandasamy Tamara Kastrin Jeremy D. Keenan Keith P. Klugman Brenda Kwambana-Adams Pierra Y. Law John A. Lees Pak‐Leung Ho Yuan Li Stephanie W. Lo Theresa J. Ochoa Shabir A. Madhi Benjamin J. Metcalf Jennifer C. Moïsi Helio Mucavele Fundação Manhiça Kedibone Ndlangisa Michele Nurse-Lucas Susan Nzenze Stephen Obaro Metka Paragi Andrew J. Pollard KL Ravikumar Ewa Sadowy Samir K. Saha Eric Sampane-Donkor Shamala Devi Sekaran Sadia Shakoor Shrijana Shrestha Betuel Sigaúque Anna Skoczyńska Kwan Soo Ko Peggy-Estelle Tientcheu Leonid Titov Yulia Urban Jennifer R. Verani Andries J. van Tonder Anne von Gottberg Nicole Wolter

Pneumococcal disease outbreaks of vaccine preventable serotype 4 sequence type (ST)801 in shipyards have been reported several countries. We aimed to use genomics establish any international links between them.Sequence data from ST801-related outbreak isolates Norway (n = 17), Finland 11) and Northern Ireland 2) were combined with invasive pneumococcal surveillance the respective countries, genomes an collection 41 > 40,000), totalling 106 genomes. Raw mapped recombination excluded before...

10.1016/j.vaccine.2021.10.046 article EN cc-by Vaccine 2022-01-05

ABSTRACT Worldwide spread of antibiotic resistance in Streptococcus pneumoniae is a major problem. However, data from West and North African countries are scarce. To study the level compare situations different cities, prospective was conducted Abidjan (Ivory Coast), Casablanca (Morocco), Dakar (Senegal), Tunis (Tunisia), 1996 to 1997. The resistances eight antibiotics 375 isolates were studied by E test, results interpreted using breakpoints recommended National Committee for Clinical...

10.1128/aac.45.2.627-629.2001 article EN Antimicrobial Agents and Chemotherapy 2001-02-01

Pertussis, a vaccine preventable disease, is still responsible of significant morbidity and mortality around the world, mostly in newborns. The aim present study was (1) to introduce pertussis surveillance major pediatric hospital Casablanca (2) analyze prevalence among children under 14 years age their entourage Casablanca, Morocco. This prospective non-case controlled study, including suspected Pertussis admitted at Abderrahim Harouchi Pediatric Hospital from January 2013 June 2015....

10.1186/s12879-017-2452-3 article EN cc-by BMC Infectious Diseases 2017-05-16

The aim of this prospective study in Morocco was to investigate the causes invasive bacterial diseases children order inform antibiotic therapy and vaccine choices. Of 238 aged < or = 5 years admitted Children's Hospital Casablanca for over a 12-month period, 185 were diagnosed with infection: 76 had chest-X-ray-confirmed pneumonia, 59 meningitis 50 sepsis. Streptococcus pneumoniae most common pathogen identified (n 24), followed by Neisseria meningitidis 18, all group B) Haemophilus...

10.26719/2012.18.11.1097 article EN Eastern Mediterranean Health Journal 2012-11-01

Streptococcus pneumoniae is a major cause of morbidity and mortality worldwide, especially among children the elderly. The ability to effectively treat pneumococcal infection has been compromised due acquisition antibiotic resistance, particularly β-lactam drugs. This study aimed describe prevalence molecular evolution penicillin non-susceptible S. (PNSP) isolated from invasive diseases before after conjugate vaccine implementation in Casablanca, Morocco. Isolates were obtained Microbiology...

10.1186/s12941-017-0200-6 article EN cc-by Annals of Clinical Microbiology and Antimicrobials 2017-04-04

Introduction: Acute bacterial meningitis is one of the most severe infectious diseases. Rapid, accurate, and inexpensive diagnosis crucial for patient management. This study describes a duplex real-time (RT) PCR assay detection Neisseria meningitidis Streptococcus pneumoniae in cerebrospinal fluid (CSF) using SYBR Green-based RT-PCR method coupled with melting curve analysis. Methodology: We used analysis to detect S. N. CSF samples. The sensitivity, specificity, limit were determined. gold...

10.3855/jidc.5647 article EN cc-by The Journal of Infection in Developing Countries 2016-01-31

The species Bordetella trematum was first described in 1996. Currently only eleven cases were published. We describe the case of issued from bacteremia with a patient who has severe burns Morocco. identification not possible by conventional microbiological methods where resort to 16S ARNr sequencing. use molecular methods, including sequencing ARNr, is currently an essential complementary tool identify pathogens.

10.1684/abc.2014.0998 article EN Annales de biologie clinique 2014-09-01

Objective: To analyze trends of antibiotic resistance rates in Streptococcus pneumoniae from 1998 to 2008 Casablanca (Morocco). Methods: The levels 955 consecutive nonduplicate isolates were studied using E test and disc diffusion methods. Results interpreted following Clinical Laboratory Standards Institute guidelines (2005). Analysis was done according three periods (1998–2001; 2002–2005; 2006–2008), age, site infection. Results: Penicillin nonsusceptibility (PNS) increased significantly...

10.1089/mdr.2011.0130 article EN Microbial Drug Resistance 2012-01-04

This study aimed to investigate the nature of amino acid motifs found in PBPs Streptococcus pneumoniae isolates invasive diseases from pediatric patients at Casablanca, Morocco. Five penicillin-susceptible (PSSP), ten penicillin-intermediate (PISP), and fifteen penicillin-resistant S. (PRSP) were studied by PCR–RFLP DNA sequencing pbp1a, − 2b, 2x genes. There no changes conserved PBP1a, PBP2b PBP2x for PSSP strains. Substitution close PBP1a all PRSP six/five PISP. Analysis showed that but...

10.1186/s13104-018-3719-5 article EN cc-by BMC Research Notes 2018-08-31
Stephanie W. Lo Rebecca A. Gladstone Andries J. van Tonder Mignon du Plessis Jennifer Cornick and 89 more Paulina A. Hawkins Shabir A. Madhi Susan Nzenze Rama Kandasamy K L Ravikumar Naima Elmdaghri Brenda Kwambana-Adams Samanta Cristine Grassi Almeida Anna Skoczyńska Egorova Ea Leonid Titov Samir K. Saha Metka Paragi Dean Everett Martín Antonio Keith P. Klugman Yuan Li Benjamin J. Metcalf Bernard Beall Lesley McGee Robert F. Breiman Stephen D. Bentley Anne von Gottberg Abdullah Brooks Alejandra Corso Alexander Davydov Alison J. Maguire Andrew J. Pollard Anmol Kiran Anna Skoczyńska Benild Moiane Betuel Sigaúque David M. Aanensen Deborah Lehmann Diego Faccone Ebenezer Foster-Nyarko Ebrima Bojang Е. А. Воропаева Eric Sampane-Donkor Ewa Sadowy Geetha Nagaraj Godfrey Bigogo Hélio Mucavele Houria Belabbès Idrissa Diawara Jennifer C. Moïsi Jennifer R. Verani Jeremy D. Keenan Jyothish Bhai Kedibone Ndlangisa Khalid Zerouali Linda de Gouveia Maaike Alaerts Maria-Cristina de Cunto Brandileone Margaret Ip Md Hasanuzzaman Metka Paragi Mushal Ali Nicholas J. Croucher Nicole Wolter Noga Givon‐Lavi Özgen Köseoğlu Eser Pak‐Leung Ho Patrick Eberechi Akpaka Paul Turner Paula Gagetti Peggy-Estelle Tientcheu Philip E. Carter Pierra Y. Law Rachel Benisty Rafal Mostowy Rebecca Ford Rebecca Henderson Roly Malaker Ron Dagan Sadia Shakoor Sanjay Doiphode Sanjay Doiphode Shamala Devi Sekaran Somporn Srifuengfung Shamala Devi Sekaran Somporn Srifuengfung Stephen Obaro Stuart C. Clarke Tamara Kastrin Theresa J. Ochoa Waleria Hryniewicz Balaji Veeraraghavan Yulia Urban

Abstract Objectives We reported tet(S/M) in Streptococcus pneumoniae and investigated its temporal spread relation to nationwide clinical interventions. Methods whole-genome sequenced 12 254 pneumococcal isolates from 29 countries on an Illumina HiSeq sequencer. Serotype, multilocus ST antibiotic resistance were inferred genomes. An SNP tree was built using Gubbins. Temporal reconstructed a birth–death model. Results identified 131 none carried other known tet genes. Tetracycline...

10.1093/jac/dkz477 article EN cc-by Journal of Antimicrobial Chemotherapy 2019-11-26

Meningococcal epidemiology may change unpredictably, and typing of Neisseria meningitidis isolates is crucial for the surveillance invasive meningococcal disease (IMD). Few data are available regarding in countries North Africa. We aimed to explore from Casablanca region Morocco. used whole-genome sequencing (WGS) characterize 105 this during period 2011 2016. Our showed that majority (n = 100) belonged serogroup B. Genotyping indicated most 62) sequence type 33 clonal complex 32. The also...

10.1128/jcm.00445-18 article EN Journal of Clinical Microbiology 2018-05-07

Abstract Background In recent decades, there has been a marked increase in the number of reported cases pertussis around world, and continues to be frequently occurring disease despite an effective childhood vaccination. This study aims determine role household contacts children diagnosed with Casablanca Morocco. Methods From November 2015 October 2017, suspected whooping cough that consulted Ibn Rochd University hospital at their were enrolled study. Nasopharyngeal (NP) samples analyzed by...

10.1186/s12879-019-4680-1 article EN cc-by BMC Infectious Diseases 2020-01-14

Blood cultures are the best diagnostic tool for detection of bacteremia. However, false positive results may lead to confusion about antibiotic regimens, putting lives patients at risk. The main purpose this study was assess prevalence coagulase negative Staphylococci (CoNS) as well Corynebacterium spp and Bacillus in bags blood culture analyzed microbiology laboratory Ibn-Rochd University Hospital Casablanca. This evaluated according various Departments over year 2016.We conducted a...

10.11604/pamj.2019.33.193.18552 article EN cc-by Pan African Medical Journal 2019-01-01

Abstract Background Streptococcus pneumoniae (S. pneumoniae) , remains a major cause of mortality and morbidity worldwide. The objective this study was to determine the trends invasive pneumococcal diseases (IPD) in adult elderly population Casablanca (Morocco) before after introduction conjugate vaccine (PCV) by determining distribution serotypes antibiotic resistance profile isolated strains. Method proposed is retrospective laboratory-based surveillance IPD hospitalized (15–59 years old)...

10.1186/s12879-023-07981-y article EN cc-by BMC Infectious Diseases 2023-01-13

Objectif : L’objectif du travail est de déterminer l’incidence des bactériémies associées aux soins (BAS) en milieu réanimation Centre hospitalier universitaire (CHU) Ibn Rochd Casablanca-Maroc, la fréquence bactéries isolées et leur résistance antibiotiques. Méthodes Il s’agit d’une étude longitudinale prospective menée entre mai juillet 2015, auprès patients hospitalisés CHU Rochd. La définition bactériémie adoptée était celle Comité technique infections nosocomiales liées (CTINILS)....

10.3917/spub.172.0209 article FR Santé Publique 2017-04-27

Introduction: the laboratory diagnosis of tuberculosis (TB) relies mainly on conventional techniques. However, it either lacks sensitivity or is time-consuming. This study aims to evaluate use real-time polymerase chain reaction (PCR) targeting IS6110 for Mycobacterium Complex (MTBC) in routine TB our laboratory.

10.11604/pamj.2020.36.134.16652 article EN cc-by Pan African Medical Journal 2020-01-01

Surveillance of invasive meningococcal diseases (IMD) must be carried out regularly and continuously in order to detect the emergence strains reduced susceptibility antibiotics for therapeutic prophylactic use appearance new clones. Molecular-typing approaches allow reliable traceability powerful epidemiological analysis. This is an study Neisseria meningitidis causing meningitis Casablanca, Morocco. The grouping was confirmed by PCR mainly on isolates from cerebrospinal fluid (CSF). A total...

10.1099/acmi.0.000157 article EN cc-by-nc Access Microbiology 2020-07-22
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