Pascale HUYNEN | Université de Liège (original) (raw)
Papers by Pascale HUYNEN
Transplant International, 2021
Audience 20-50 young clinicians (infectious diseases specialists, obstetricians, gynecologists, n... more Audience 20-50 young clinicians (infectious diseases specialists, obstetricians, gynecologists, neonatologists, pediatricians, microbiologists, virologists, biologists or other graduates involved in this field).
Journal of Clinical Virology, Nov 1, 2013
ABSTRACT Noroviruses (NoV) are a leading cause of gastroenteritis worldwide. Few epidemiological ... more ABSTRACT Noroviruses (NoV) are a leading cause of gastroenteritis worldwide. Few epidemiological data regarding the NoV strains circulating in African countries are available. To determine the prevalence of NoV in Bobo Dioulasso (Burkina Faso) in both symptomatic and asymptomatic gastroenteritis patients. Patients both with and without gastro-intestinal disorders were selected. Clinical and epidemiological data, as well as stool samples, were collected through March to April 2011. NoV molecular detection (genogrouping and genotyping) and viral load quantification were also performed for all samples. NoV were detected in 22.2% of the 418 collected stool samples (21.2% and 24.8% from the 293 symptomatic patients (SP) and the 125 asymptomatic patients (ASP) respectively). Genogroup (G) distribution was 7.5%, 10.2% and 3.4% for GI, GII and both GI/GII respectively among SP and 12.0%, 11.2% and 1.6% for GI, GII and both GI/GII, respectively, among ASP. Average viral load values were higher in SP than in ASP for GI (p=0.03) but not for GII. Phylogenic analysis showed a high degree of genotype diversity in SP and ASP. One recombinant GII.7/GII.6 sequence was, to the best of our knowledge, detected for the first time. This study enabled identification of the specific molecular epidemiology of NoV strains circulating in a representative country in Eastern Africa, and additionally showed that ASP could play an important "reservoir" role. A high strain diversity was detected with a surprisingly high proportion of NoV GI compared to the common genotypes usually reported in comparable epidemiological studies.
International Journal of Infectious Diseases, Apr 1, 2018
A case of proven Coxiella burnetii aortitis, possibly associated with giant cell arteritis (GCA),... more A case of proven Coxiella burnetii aortitis, possibly associated with giant cell arteritis (GCA), is reported. A 72-year-old man, who is a hunter, presented with weight loss, fever, jaw claudication, and hardened temporal arteries associated with a persistent inflammatory syndrome and arteritis of the whole aorta, including the brachiocephalic arteries, as seen on 18 F-fluorodeoxyglucose positron emission tomography/computed tomography. The diagnosis of GCA was retained, and treatment with prednisolone was started. Given the aneurysm of the abdominal aorta, the patient underwent replacement of the abdominal aorta with an allograft. Histology showed intense chronic arteritis attributed to atherosclerosis with dissection. However, Coxiella burnetii infection was confirmed by serology and then by culture and molecular biology on the surgical specimen. A combination of hydroxychloroquine and doxycycline was added to tapered prednisolone and the outcome was favourable.
PubMed, Feb 1, 2019
Human noroviruses (NoV) are the main pathogenic agents worldwide responsible for viral sporadic a... more Human noroviruses (NoV) are the main pathogenic agents worldwide responsible for viral sporadic and epidemic gastroenteritis worldwide. A gastroenteritis outbreak broke out in patients hospitalized in several wards located in two different floors of a hospital in Liege, Belgium. The objective was to determine whether a same NoV strain would be involved in the two different floors, and to explore how this outbreak would have spread from a floor to the other. Stool samples from patients and healthcare workers were collected, as well as data from medical files. NoV detection, quantification and characterization were performed using molecular biology methods. A same NoV strain, from genotype GII.4, was detected in two patients hospitalized on the two different floors. This finding allowed to conclude that a same outbreak spread in the two floors, probably due to movements of common healthcare workers. A rapid NoV detection during outbreak is important in the aim to rapidly implement hygiene measures to limit the size of the outbreak.
Annales de l'Institut Pasteur. Virologie, 1985
D31. ASTHMA EPIDEMIOLOGY, 2020
Transplant International, 2021
Journal of Medical Microbiology, 2012
Les infections néonatales précoces causées par Streptococcus agalactiae (streptocoque du groupe B... more Les infections néonatales précoces causées par Streptococcus agalactiae (streptocoque du groupe B, GBS) peuvent être prévenues par administration d’une antibioprophylaxie intrapartum (AIP) aux femmes identifiées GBS positives. Un test de dépistage vaginal rapide réalisé en début de travail permettrait une meilleure sélection des candidates à l’AIP que la stratégie basée sur un dépistage anténatal. OBJECTIFS Evaluation en laboratoire du test PCR GenePOCTM GBS DS (PCR GBS DS) sur frottis vaginal prélevé en intrapartum : performances et praticabilité du test en vue de sa réalisation en Point-Of-Care (POC). MATERIEL & METHODES De janvier à août 2018, inclusion de 102 frottis vaginaux prélevés en intrapartum avec le consentement de patientes admises en travail à la maternité du CHU de Liège. Collecte et évaluation se poursuivent. A la réception au laboratoire, décharge des frottis dans le milieu de conservation du kit PCR GBS DS: 150 µl utilisés pour réaliser le test PCR GBS DS sur système RevogeneTM, 10 µl mis en culture sur milieu sélectif Granada (Becton Dickinson, BD) et 300 µl inoculés en bouillon de Lim (BD). Après une nuit d’incubation, sous-culture sur Granada et gélose sélective chromogène StrepBselect (Biorad). Contrôle des discordances entre test PCR GBS DS et culture par PCR GenePOCTM GBS LB et PCR XpertTM GBS LB (Cepheid) sur les bouillons de Lim. RESULTATS Des cultures intrapartum, 12% étaient positives : 9 en primoculture et 3 après enrichissement. Le test PCR GBS DS a identifié 11 de ces échantillons positifs. Par comparaison avec la culture intrapartum, les sensibilité et spécificité du test PCR GBS DS, calculées sur base de ces premiers résultats, sont de 92 et 99% respectivement. Le taux d’erreur du test PCR GBS DS est de 2%. La réalisation du test PCR GBS DS et l’utilisation du système RevogeneTM sont extrêmement simples. Les résultats positifs ou négatifs sont obtenus en 75 minutes. DISCUSSION Les sensibilité et spécificité démontrées par le test PCR GBS DS réalisé au laboratoire sur frottis vaginaux intrapartum répondent aux exigences requises pour un dépistage intrapartum. Le délai de 75 minutes pour l’obtention des résultats dépasse les attentes idéales pour un test intrapartum. Ces performances devront être confirmées lorsque l’analyse sera réalisée en POC par des sages-femmes au bloc d’accouchement.Peer reviewe
Despite advances in preventive strategies, Group B Streptococcal (GBS) disease is still a leading... more Despite advances in preventive strategies, Group B Streptococcal (GBS) disease is still a leading cause of severe neonatal infections. The Belgian National Reference Centre (NRC) routinely performs surveillances of GBS invasive strains.
Objectives Dermatophytosis refers to superficial fungal infections of keratinized tissues caused ... more Objectives Dermatophytosis refers to superficial fungal infections of keratinized tissues caused by keratinophilic dermatophytes. They are the most common cause of superficial fungal infections worldwide. Epidemiological studies regarding dermatophytes infections have been conducted in several countries and differences in the incidence and in etiological agents have been reported. That is why national surveillance of circulating strains causing dermatophytosis is critical. The National Reference Center (NRC) for mycoses conducted a survey on dermatophytes strains circulating in Belgium from 2012 to 2016. The present study was performed to assess the profile of dermatophytosis and to identify the species involved. Methods The Belgian NRC for mycoses (Leuven and Liège) collected 14227 strains between January 2012 and December 2016. The strains were obtained from clinically suspected fungal infections of skin, hair and nails. Strains were collected from Belgian laboratories in order to confirm the fungal identification which was performed by microscopy and in case of doubt by ITS sequencing. Results Among the 14227 samples collected, 6248 were identified as dermatophytes (44%). Trichophyton rubrum was the most prevalent species accounting for 61,3% (n=3820) of the strains collected from all sources, followed by T. mentagrophytes complex (19,2%, n=1199) according to the ancient classification (including T. interdigitale, T. benhamiae and T. mentagrophytes). Other less prevalent species were also recorded: M. audouinii (n=507, 8,1%), M. canis (n=210, 3,3%), T. tonsurans (n= 140, 2,2%), T. violaceum (n=133, 2,1%), T. soudanense (n=125, 2%), M. praecox (n=60, 0,96%) and E. floccosum (n=19, 0,3%) for the main ones. Our data show the predominance of anthropophilic species causing tinea capitis especially M. audouinii responsible for 43,4% (n=303/716) of hair/scalp infection with an increasing number from 2014 to 2016. Trichophyton soudanense, rarely observed in Belgium in the past, is an emerging agent of tinea capitis particularly since 2013, accounting for 11,3% (n=81) of the cases during the 5-year study period. Zoophilic strains such as M. canis which were well represented in the past epidemiology of tinea capitis are decreasing accounting for only 8,8% (n=63) of hair/scalp infection. Finally, our data confirm the high prevalence of T. rubrum as the main etiologic agent of onychomycosis (78,1%, n=3094/3968) followed by T. mentagrophytes complex (18,8%, n=743/3968). Both latter strains were also responsible for the majority of skin infections as they were isolated respectively in 46,2% (n=693/1612) and 21,7% (n=348/1612) of skin samples. Conclusions The present epidemiological survey provides recent data on the prevalence of all dermatophytes circulating in Belgium. Analyzing such data is critical for the establishment of measures for prevention and control of dermatophytes infections. Our study confirms the predominance of T. rubrum followed by species from the ancient T. mentagrophytes complex (T. interdigitale + T. benhamiae) in the Belgian population. This survey highlights also the persistent predominance of M. audouinii and the emergence of T. soudanense as causative agents of tinea capitis.Peer reviewe
Aim: Improving knowledge and characterization of GBS strains colonizing pregnant women in Belgium... more Aim: Improving knowledge and characterization of GBS strains colonizing pregnant women in Belgium. Methods: In 2013, collection of 387 strains of GBS from 80 laboratories participating in a national survey among pregnant woman. For each strain, determination of capsular-polysaccharide type agglutination and PCR, of pili-type by PCR and of antimicrobial susceptibility by disk-diffusion, broth-microdilution and detection of resistant genes by PCR. For serotype III strains, determination sequence-type by Multiple-Locus Sequence-Typing (MLST). Results: Serotype III was the most prevalent (28.5%) followed by serotypes V, Ia, II, IV and Ib (20.4%, 19.9%, 17.8%, 7%, 5.4%). Serotypes VI, VII and IX were found each once. All strains remained susceptible to penicillin (MICs: 0.03-0.125 mg/L) and other beta-lactams tested; 28.7% were resistant to erythromycin and 26.7% to clindamycin. With regards to pili, all 387 strains harboured one the PI-2 variants alone or in combination and 70.3% contained PI-1. The 110 serotype III isolates were resolved into 18 STs. The most common were ST-17 (35.5%) followed by ST-19 (30%) and ST- ST-27, ST-23 (<=5%). Conclusion: Among GBS from colonized pregnant women in Belgium: capsular-type and pili distributions, and MLST profile among type III strains were quite similar to reported data from Europ and USA during the last decade. As showed in this study, penicillin remains the first line drug of choice. On the contrary, resistance rates against macrolides/lincosamide, has reached a plateau since a decade, but it is noteworthy to notify the emergence of strains with isolated resistance to clindamycine.Peer reviewe
Transplant International, 2021
Audience 20-50 young clinicians (infectious diseases specialists, obstetricians, gynecologists, n... more Audience 20-50 young clinicians (infectious diseases specialists, obstetricians, gynecologists, neonatologists, pediatricians, microbiologists, virologists, biologists or other graduates involved in this field).
Journal of Clinical Virology, Nov 1, 2013
ABSTRACT Noroviruses (NoV) are a leading cause of gastroenteritis worldwide. Few epidemiological ... more ABSTRACT Noroviruses (NoV) are a leading cause of gastroenteritis worldwide. Few epidemiological data regarding the NoV strains circulating in African countries are available. To determine the prevalence of NoV in Bobo Dioulasso (Burkina Faso) in both symptomatic and asymptomatic gastroenteritis patients. Patients both with and without gastro-intestinal disorders were selected. Clinical and epidemiological data, as well as stool samples, were collected through March to April 2011. NoV molecular detection (genogrouping and genotyping) and viral load quantification were also performed for all samples. NoV were detected in 22.2% of the 418 collected stool samples (21.2% and 24.8% from the 293 symptomatic patients (SP) and the 125 asymptomatic patients (ASP) respectively). Genogroup (G) distribution was 7.5%, 10.2% and 3.4% for GI, GII and both GI/GII respectively among SP and 12.0%, 11.2% and 1.6% for GI, GII and both GI/GII, respectively, among ASP. Average viral load values were higher in SP than in ASP for GI (p=0.03) but not for GII. Phylogenic analysis showed a high degree of genotype diversity in SP and ASP. One recombinant GII.7/GII.6 sequence was, to the best of our knowledge, detected for the first time. This study enabled identification of the specific molecular epidemiology of NoV strains circulating in a representative country in Eastern Africa, and additionally showed that ASP could play an important "reservoir" role. A high strain diversity was detected with a surprisingly high proportion of NoV GI compared to the common genotypes usually reported in comparable epidemiological studies.
International Journal of Infectious Diseases, Apr 1, 2018
A case of proven Coxiella burnetii aortitis, possibly associated with giant cell arteritis (GCA),... more A case of proven Coxiella burnetii aortitis, possibly associated with giant cell arteritis (GCA), is reported. A 72-year-old man, who is a hunter, presented with weight loss, fever, jaw claudication, and hardened temporal arteries associated with a persistent inflammatory syndrome and arteritis of the whole aorta, including the brachiocephalic arteries, as seen on 18 F-fluorodeoxyglucose positron emission tomography/computed tomography. The diagnosis of GCA was retained, and treatment with prednisolone was started. Given the aneurysm of the abdominal aorta, the patient underwent replacement of the abdominal aorta with an allograft. Histology showed intense chronic arteritis attributed to atherosclerosis with dissection. However, Coxiella burnetii infection was confirmed by serology and then by culture and molecular biology on the surgical specimen. A combination of hydroxychloroquine and doxycycline was added to tapered prednisolone and the outcome was favourable.
PubMed, Feb 1, 2019
Human noroviruses (NoV) are the main pathogenic agents worldwide responsible for viral sporadic a... more Human noroviruses (NoV) are the main pathogenic agents worldwide responsible for viral sporadic and epidemic gastroenteritis worldwide. A gastroenteritis outbreak broke out in patients hospitalized in several wards located in two different floors of a hospital in Liege, Belgium. The objective was to determine whether a same NoV strain would be involved in the two different floors, and to explore how this outbreak would have spread from a floor to the other. Stool samples from patients and healthcare workers were collected, as well as data from medical files. NoV detection, quantification and characterization were performed using molecular biology methods. A same NoV strain, from genotype GII.4, was detected in two patients hospitalized on the two different floors. This finding allowed to conclude that a same outbreak spread in the two floors, probably due to movements of common healthcare workers. A rapid NoV detection during outbreak is important in the aim to rapidly implement hygiene measures to limit the size of the outbreak.
Annales de l'Institut Pasteur. Virologie, 1985
D31. ASTHMA EPIDEMIOLOGY, 2020
Transplant International, 2021
Journal of Medical Microbiology, 2012
Les infections néonatales précoces causées par Streptococcus agalactiae (streptocoque du groupe B... more Les infections néonatales précoces causées par Streptococcus agalactiae (streptocoque du groupe B, GBS) peuvent être prévenues par administration d’une antibioprophylaxie intrapartum (AIP) aux femmes identifiées GBS positives. Un test de dépistage vaginal rapide réalisé en début de travail permettrait une meilleure sélection des candidates à l’AIP que la stratégie basée sur un dépistage anténatal. OBJECTIFS Evaluation en laboratoire du test PCR GenePOCTM GBS DS (PCR GBS DS) sur frottis vaginal prélevé en intrapartum : performances et praticabilité du test en vue de sa réalisation en Point-Of-Care (POC). MATERIEL & METHODES De janvier à août 2018, inclusion de 102 frottis vaginaux prélevés en intrapartum avec le consentement de patientes admises en travail à la maternité du CHU de Liège. Collecte et évaluation se poursuivent. A la réception au laboratoire, décharge des frottis dans le milieu de conservation du kit PCR GBS DS: 150 µl utilisés pour réaliser le test PCR GBS DS sur système RevogeneTM, 10 µl mis en culture sur milieu sélectif Granada (Becton Dickinson, BD) et 300 µl inoculés en bouillon de Lim (BD). Après une nuit d’incubation, sous-culture sur Granada et gélose sélective chromogène StrepBselect (Biorad). Contrôle des discordances entre test PCR GBS DS et culture par PCR GenePOCTM GBS LB et PCR XpertTM GBS LB (Cepheid) sur les bouillons de Lim. RESULTATS Des cultures intrapartum, 12% étaient positives : 9 en primoculture et 3 après enrichissement. Le test PCR GBS DS a identifié 11 de ces échantillons positifs. Par comparaison avec la culture intrapartum, les sensibilité et spécificité du test PCR GBS DS, calculées sur base de ces premiers résultats, sont de 92 et 99% respectivement. Le taux d’erreur du test PCR GBS DS est de 2%. La réalisation du test PCR GBS DS et l’utilisation du système RevogeneTM sont extrêmement simples. Les résultats positifs ou négatifs sont obtenus en 75 minutes. DISCUSSION Les sensibilité et spécificité démontrées par le test PCR GBS DS réalisé au laboratoire sur frottis vaginaux intrapartum répondent aux exigences requises pour un dépistage intrapartum. Le délai de 75 minutes pour l’obtention des résultats dépasse les attentes idéales pour un test intrapartum. Ces performances devront être confirmées lorsque l’analyse sera réalisée en POC par des sages-femmes au bloc d’accouchement.Peer reviewe
Despite advances in preventive strategies, Group B Streptococcal (GBS) disease is still a leading... more Despite advances in preventive strategies, Group B Streptococcal (GBS) disease is still a leading cause of severe neonatal infections. The Belgian National Reference Centre (NRC) routinely performs surveillances of GBS invasive strains.
Objectives Dermatophytosis refers to superficial fungal infections of keratinized tissues caused ... more Objectives Dermatophytosis refers to superficial fungal infections of keratinized tissues caused by keratinophilic dermatophytes. They are the most common cause of superficial fungal infections worldwide. Epidemiological studies regarding dermatophytes infections have been conducted in several countries and differences in the incidence and in etiological agents have been reported. That is why national surveillance of circulating strains causing dermatophytosis is critical. The National Reference Center (NRC) for mycoses conducted a survey on dermatophytes strains circulating in Belgium from 2012 to 2016. The present study was performed to assess the profile of dermatophytosis and to identify the species involved. Methods The Belgian NRC for mycoses (Leuven and Liège) collected 14227 strains between January 2012 and December 2016. The strains were obtained from clinically suspected fungal infections of skin, hair and nails. Strains were collected from Belgian laboratories in order to confirm the fungal identification which was performed by microscopy and in case of doubt by ITS sequencing. Results Among the 14227 samples collected, 6248 were identified as dermatophytes (44%). Trichophyton rubrum was the most prevalent species accounting for 61,3% (n=3820) of the strains collected from all sources, followed by T. mentagrophytes complex (19,2%, n=1199) according to the ancient classification (including T. interdigitale, T. benhamiae and T. mentagrophytes). Other less prevalent species were also recorded: M. audouinii (n=507, 8,1%), M. canis (n=210, 3,3%), T. tonsurans (n= 140, 2,2%), T. violaceum (n=133, 2,1%), T. soudanense (n=125, 2%), M. praecox (n=60, 0,96%) and E. floccosum (n=19, 0,3%) for the main ones. Our data show the predominance of anthropophilic species causing tinea capitis especially M. audouinii responsible for 43,4% (n=303/716) of hair/scalp infection with an increasing number from 2014 to 2016. Trichophyton soudanense, rarely observed in Belgium in the past, is an emerging agent of tinea capitis particularly since 2013, accounting for 11,3% (n=81) of the cases during the 5-year study period. Zoophilic strains such as M. canis which were well represented in the past epidemiology of tinea capitis are decreasing accounting for only 8,8% (n=63) of hair/scalp infection. Finally, our data confirm the high prevalence of T. rubrum as the main etiologic agent of onychomycosis (78,1%, n=3094/3968) followed by T. mentagrophytes complex (18,8%, n=743/3968). Both latter strains were also responsible for the majority of skin infections as they were isolated respectively in 46,2% (n=693/1612) and 21,7% (n=348/1612) of skin samples. Conclusions The present epidemiological survey provides recent data on the prevalence of all dermatophytes circulating in Belgium. Analyzing such data is critical for the establishment of measures for prevention and control of dermatophytes infections. Our study confirms the predominance of T. rubrum followed by species from the ancient T. mentagrophytes complex (T. interdigitale + T. benhamiae) in the Belgian population. This survey highlights also the persistent predominance of M. audouinii and the emergence of T. soudanense as causative agents of tinea capitis.Peer reviewe
Aim: Improving knowledge and characterization of GBS strains colonizing pregnant women in Belgium... more Aim: Improving knowledge and characterization of GBS strains colonizing pregnant women in Belgium. Methods: In 2013, collection of 387 strains of GBS from 80 laboratories participating in a national survey among pregnant woman. For each strain, determination of capsular-polysaccharide type agglutination and PCR, of pili-type by PCR and of antimicrobial susceptibility by disk-diffusion, broth-microdilution and detection of resistant genes by PCR. For serotype III strains, determination sequence-type by Multiple-Locus Sequence-Typing (MLST). Results: Serotype III was the most prevalent (28.5%) followed by serotypes V, Ia, II, IV and Ib (20.4%, 19.9%, 17.8%, 7%, 5.4%). Serotypes VI, VII and IX were found each once. All strains remained susceptible to penicillin (MICs: 0.03-0.125 mg/L) and other beta-lactams tested; 28.7% were resistant to erythromycin and 26.7% to clindamycin. With regards to pili, all 387 strains harboured one the PI-2 variants alone or in combination and 70.3% contained PI-1. The 110 serotype III isolates were resolved into 18 STs. The most common were ST-17 (35.5%) followed by ST-19 (30%) and ST- ST-27, ST-23 (<=5%). Conclusion: Among GBS from colonized pregnant women in Belgium: capsular-type and pili distributions, and MLST profile among type III strains were quite similar to reported data from Europ and USA during the last decade. As showed in this study, penicillin remains the first line drug of choice. On the contrary, resistance rates against macrolides/lincosamide, has reached a plateau since a decade, but it is noteworthy to notify the emergence of strains with isolated resistance to clindamycine.Peer reviewe