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Hikmat H, Le Targa L, Boschi C, Py J, Bedotto M, Morand A, Cassir N, Aherfi S, La Scola B, Colson P. Sequencing and characterization of human bocavirus genomes from patients diagnosed in Southern France between 2017 and 2022. J Med Virol 2024; 96:e29706. [PMID: 38888111 DOI: 10.1002/jmv.29706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/03/2024] [Accepted: 05/13/2024] [Indexed: 06/20/2024]
Abstract
The diversity and evolution of the genomes of human bocavirus (HBoV), which causes respiratory diseases, have been scarcely studied. Here, we aimed to obtain and characterize HBoV genomes from patients's nasopharyngeal samples collected between 2017 and 2022 period (5 years and 7 months). Next-generation sequencing (NGS) used Illumina technology after having implemented using GEMI an in-house multiplex PCR amplification strategy. Genomes were assembled and analyzed with CLC Genomics, Mafft, BioEdit, MeV, Nextclade, MEGA, and iTol. A total of 213 genomes were obtained. Phylogeny classified them all as of Bocavirus 1 (HBoV1) species. Five HBoV1 genotypic clusters determined by hierarchical clustering analysis of 27 variable genome positions were scattered over the study period although with differences in yearly prevalence. A total of 167 amino acid substitutions were detected. Besides, coinfection was observed for 52% of the samples, rhinoviruses then adenoviruses (HAdVs) being the most common viruses. Principal component analysis showed that HBoV1 genotypic cluster α tended to be correlated with HAdV co-infection. Subsequent HAdV typing for HBoV1-positive samples and negative controls demonstrated that HAdVC species predominated but HAdVB was that significantly HBoV1-associated. Overall, we described here the first HBoV1 genomes sequenced for France. HBoV1 and HAdVB association deserves further investigation.
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Affiliation(s)
- Houmadi Hikmat
- Microbes Evolution Phylogeny and Infection (MEPHI), Aix-Marseille Universite, Marseille, France
- IHU Méditerranée Infection, Marseille, France
| | - Lorlane Le Targa
- Microbes Evolution Phylogeny and Infection (MEPHI), Aix-Marseille Universite, Marseille, France
- IHU Méditerranée Infection, Marseille, France
- Biosellal, Lyon, France
| | - Celine Boschi
- Microbes Evolution Phylogeny and Infection (MEPHI), Aix-Marseille Universite, Marseille, France
- IHU Méditerranée Infection, Marseille, France
- Assistance Publique-Hôpitaux de Marseille (AP-HM), Marseille, France
| | - Justine Py
- Microbes Evolution Phylogeny and Infection (MEPHI), Aix-Marseille Universite, Marseille, France
- IHU Méditerranée Infection, Marseille, France
| | - Marielle Bedotto
- Assistance Publique-Hôpitaux de Marseille (AP-HM), Marseille, France
| | - Aurélie Morand
- Service d'Accueil des Urgences Pédiatriques, Hôpital Nord, AP-HM, Marseille, France
- Service de Pédiatrie Générale, Hôpital Timone, AP-HM, Marseille, France
| | - Nadim Cassir
- Microbes Evolution Phylogeny and Infection (MEPHI), Aix-Marseille Universite, Marseille, France
- IHU Méditerranée Infection, Marseille, France
- Assistance Publique-Hôpitaux de Marseille (AP-HM), Marseille, France
| | - Sarah Aherfi
- Microbes Evolution Phylogeny and Infection (MEPHI), Aix-Marseille Universite, Marseille, France
- IHU Méditerranée Infection, Marseille, France
- Assistance Publique-Hôpitaux de Marseille (AP-HM), Marseille, France
| | - Bernard La Scola
- Microbes Evolution Phylogeny and Infection (MEPHI), Aix-Marseille Universite, Marseille, France
- IHU Méditerranée Infection, Marseille, France
- Assistance Publique-Hôpitaux de Marseille (AP-HM), Marseille, France
| | - Philippe Colson
- Microbes Evolution Phylogeny and Infection (MEPHI), Aix-Marseille Universite, Marseille, France
- IHU Méditerranée Infection, Marseille, France
- Assistance Publique-Hôpitaux de Marseille (AP-HM), Marseille, France
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Farrag MA, Aziz IM, Alsaleh AN, Almajhdi FN. Human bocavirus in Saudi Arabia: Molecular epidemiology and Co-infections among children with acute respiratory tract infections during 2014-2016. Heliyon 2024; 10:e28350. [PMID: 38560213 PMCID: PMC10981067 DOI: 10.1016/j.heliyon.2024.e28350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 03/14/2024] [Accepted: 03/17/2024] [Indexed: 04/04/2024] Open
Abstract
Respiratory tract infections due to a variety of viruses continue to threaten the human population worldwide, particularly in developing countries. Among the responsible viruses, Human Bocavirus (HBoV), a novel discovered virus, causes respiratory tract and gastroenteritis disorders in young children. In Saudi Arabia, data regarding virus molecular epidemiology and evolution and its implication in respiratory tract infection are scarce. In the current study, genetic diversity and circulation pattern of HBoV-1 among hospitalized children due to acute respiratory tract infection (ARTI) during two consecutive years were charted. We found that 3.44% (2014/2015) and 11.25% (2015/2016) of children hospitalized due to ARTI were infected by HBoV-1. We have shown that HBoV was detected year-round without a marked seasonal peak. HBoV-1 also was co-detected with one or multiple other respiratory viruses. The multisequence analysis showed high sequence identity (∼99%) (few point mutation sites) between strains of each genotype and high sequence variation (∼79%) between HBoV-1 and the other 3 genotypes. Phylogenetic analysis showed the clustering of the study's isolates in the HBoV-1 subclade. Our data reveal that genetically conserved HBoV-1 was circulating among admitted children during the course of the study. Further epidemiological and molecular characterization of multiple HBoV-1 strains for different years and from all regions of Saudi Arabia are required to understand and monitor the virus evolution.
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Affiliation(s)
- Mohamed A. Farrag
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ibrahim M. Aziz
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Asma N. Alsaleh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Fahad N. Almajhdi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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Caporizzi A, Ravidà F, Barneschi S, Moriondo M, Nieddu F, Boscia S, Stinco M, Ricci S, Trapani S. Analysis of a Cohort of 165 Pediatric Patients with Human Bocavirus Infection and Comparison between Mono-Infection and Respiratory Co-Infections: A Retrospective Study. Pathogens 2024; 13:55. [PMID: 38251362 PMCID: PMC10821073 DOI: 10.3390/pathogens13010055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/23/2024] Open
Abstract
INTRODUCTION Human Bocavirus (HBoV) is mainly associated with respiratory tract infections. However, its role as respiratory pathogen is not fully understood for a high co-infection rate in symptomatic patients and a significant HBoV detection rate in asymptomatic subjects. This study aimed to describe a large cohort of children with HBoV infection and to compare HBoV mono-infection and co-infections. METHODS We retrospectively reviewed data from 165 children admitted to Meyer Children's Hospital IRCCS from March 2022 to March 2023 with the diagnosis of HBoV infection, detected using Reverse Transcription qPCR from nasal swabs. Thereafter, we compared patients with HBoV mono-infection (Group A) and those with HBoV co-infections (Group B) in terms of disease severity, established by the length of stay (LOS), the requirement of Pediatric Intensive Care Unit (PICU), and advanced respiratory support (ARS). RESULTS The median age was 1.5 years; 80% of patients presented with respiratory symptoms. The discharge rate from the emergency department (ED) within 24 h was 42.4%. Most cases (57.6%) were hospitalized, and 7.3% were admitted to PICU due to respiratory failure. Group A comprised 69 patients, and Group B 96 children (95% viral co-infections, 2% bacterial, 3% viral and bacterial). Group A and Group B were similar in hospitalization rate but differed significantly in LOS (median 3 vs. 5 days) and requirement of PICU admission (0 vs. 12 patients, p < 0.001). Patients with a respiratory disease history (17.5%) showed significantly longer LOS and more necessity of inhaled bronchodilator therapy. CONCLUSIONS HBoV should be considered a relevant respiratory pathogen especially in viral co-infections. Patients with HBoV co-infections have a higher risk of necessitating advanced respiratory support with more PICU admission and longer LOS; a previous respiratory disease puts them at a higher risk of longer hospitalization.
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Affiliation(s)
- Alice Caporizzi
- Postgraduate School of Pediatrics, University of Florence, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (F.R.); (S.B.)
| | - Federica Ravidà
- Postgraduate School of Pediatrics, University of Florence, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (F.R.); (S.B.)
| | - Sara Barneschi
- Postgraduate School of Pediatrics, University of Florence, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (F.R.); (S.B.)
| | - Maria Moriondo
- Division of Immunology, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (M.M.); (F.N.); (S.B.); (S.R.)
| | - Francesco Nieddu
- Division of Immunology, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (M.M.); (F.N.); (S.B.); (S.R.)
| | - Silvia Boscia
- Division of Immunology, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (M.M.); (F.N.); (S.B.); (S.R.)
| | - Mariangela Stinco
- Pediatric Unit, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (M.S.); (S.T.)
| | - Silvia Ricci
- Division of Immunology, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (M.M.); (F.N.); (S.B.); (S.R.)
- Department of Health Sciences, University of Florence, 50139 Florence, Italy
| | - Sandra Trapani
- Pediatric Unit, Meyer Children’s Hospital IRCCS, Viale Pieraccini 24, 50139 Florence, Italy; (M.S.); (S.T.)
- Department of Health Sciences, University of Florence, 50139 Florence, Italy
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Boggio GA, Moreno LB, Salbetti MBC, Villarreal V, Torres E, Adamo MP. Clinical characterization of human bocavirus 1 infection in infants hospitalized in an intensive care unit for severe acute respiratory tract disease. Diagn Microbiol Infect Dis 2023; 107:116050. [PMID: 37597460 DOI: 10.1016/j.diagmicrobio.2023.116050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/07/2023] [Accepted: 07/28/2023] [Indexed: 08/21/2023]
Abstract
Acute respiratory infections represent the leading cause of morbimortality in children and viruses are the main etiological agents. Here we describe the clinical characteristics and evolution of infants admitted to intensive care unit with severe acute respiratory infection (SARI) due to Human Bocavirus 1 mono-infection in patients without previous comorbidity. We also compared them with respiratory syncytial virus (RSV) cases. Of 141 cases included (age 5.43 ± 4.54 months, 52% male), 80% had at least 1 virus detected. RSV was the most frequent in the series (71.6%) followed by HBoV1 (28%). Five cases of HBoV1 mono-detection were identified. Pediatric acute respiratory distress syndrome was present in both groups, HBoV1 and RSV. The clinical presentation and evolution of HBoV1 single infection was similar to RSV. HBoV1 should be included among the agents investigated in cases of SARI in infants.
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Affiliation(s)
- Gabriel Amilcar Boggio
- Cátedra de Clínica Pediátrica, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Hospital de Niños de la Santísima Trinidad de Córdoba, Córdoba, Argentina.
| | - Laura Beatriz Moreno
- Cátedra de Clínica Pediátrica, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María Belén Colazo Salbetti
- Instituto de Virología "Dr. J. M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | | | - Erica Torres
- Hospital de Niños de la Santísima Trinidad de Córdoba, Córdoba, Argentina
| | - María Pilar Adamo
- Instituto de Virología "Dr. J. M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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Prevalence of Human Bocavirus in Children Under 5 Years with Upper and Lower Respiratory Infections in Southeastern Iran. ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2022. [DOI: 10.5812/pedinfect.116441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Human Bocavirus (HBoV) is a parvovirus associated with mild to severe upper and lower respiratory tract infections in children. Objectives: This study aimed to detect the virus in the nasopharynx of children under 5-year-old with respiratory infection by polymerase chain reaction (PCR). Methods: Two hundred samples were taken from children referred to pediatric clinics in Kerman, southeastern Iran, with respiratory infections and were positive for virus by PCR. Next, the positive samples were genotyped by real-time PCR. Results: Out of 200 samples, 13 (6.5%) were positive for the Bocavirus gene, and all positive samples were infected by HBoV-1. We observed that 116 patients were male, and there was no difference in the prevalence of the virus based on gender (P = 0.345). The prevalence was significantly higher in infants under 10 months old (P = 0.049). Infection by Bucavirus virus was significantly correlated with symptoms, such as fever (P = 0.035, r = 0.7), otitis media (P = 0.013, r = 0.8), diarrhea, nausea, and vomiting (P = 0.001, r = 0.4). Conclusions: According to our findings, HBoV could be one of the causes of infections in the respiratory system of children, and the only type in the studied region is HBoV-1.
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You FF, Zhang MY, Wu F, Li QS, Chen Q. Human bocavirus 2 detected in Rattus norvegicus feces in China. Arch Virol 2021; 167:171-175. [PMID: 34671852 DOI: 10.1007/s00705-021-05274-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 09/02/2021] [Indexed: 11/11/2022]
Abstract
Bocaviruses are typical zoonotic pathogens with a wide range of hosts. Here, we report the detection of human bocavirus (HBoV) in Rattus norvegicus captured in China and the results of sequencing and phylogenetic analysis based on the partial VP1 region and the entire viral genome. A total of 357 fecal samples from rats were collected in 2015-2017 and analyzed for HBoV using PCR. The detection rate of HBoV was 0.84% (3/357). Phylogenetic analysis revealed that this virus is genetically closely related to HBoV-2. R. norvegicus may be a carrier of HBoV, and its impact on public health merits attention.
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Affiliation(s)
- Fang-Fei You
- Department of Epidemiology, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, China
| | - Min-Yi Zhang
- Department of Epidemiology, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, China
| | - Fei Wu
- Department of Epidemiology, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, China
| | - Qiu-Shuang Li
- Department of Epidemiology, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, China
| | - Qing Chen
- Department of Epidemiology, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, China.
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Bouzid D, Vila J, Hansen G, Manissero D, Pareja J, Rao SN, Visseaux B. Systematic review on the association between respiratory virus real-time PCR cycle threshold values and clinical presentation or outcomes. J Antimicrob Chemother 2021; 76:iii33-iii49. [PMID: 34555159 PMCID: PMC8460103 DOI: 10.1093/jac/dkab246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Objectives It is unclear whether real-time (rt)-PCR cycle threshold (Ct) values can be utilized to guide clinical and infection-control decisions. This systematic review assesses the association between respiratory pathogen rt-PCR Ct values and clinical presentation or outcomes. Methods We searched MEDLINE, EMBASE and Cochrane library databases on 14–17 January 2020 for studies reporting the presence or absence of an association between Ct values and clinical presentation or outcomes, excluding animal studies, reviews, meta-analyses, and non-English language studies. Results Among 33 studies identified (reporting on between 9 and 4918 participants by pathogen), influenza (n = 11 studies; 4918 participants), human rhinovirus (HRV, n = 11; 2012) and respiratory syncytial virus (RSV, n = 8; 3290) were the most-studied pathogens. Low influenza Ct values were associated with mortality in 1/3 studies, with increased disease severity/duration or ICU admission in 3/9, and with increased hospitalization or length of hospital stay (LOS) in 1/6. Low HRV Ct values were associated with increased disease severity/duration or ICU admission in 3/10 studies, and with increased hospitalization or LOS in 1/3. Low RSV Ct values were associated with increased disease severity/duration or ICU admission in 3/6 studies, and with increased hospitalization or LOS in 4/4. Contradictory associations were also identified for other respiratory pathogens. Conclusions Respiratory infection Ct values may inform clinical and infection-control decisions. However, the study heterogeneity observed in this review highlights the need for standardized workflows to utilize Ct values as a proxy of genomic load and confirm their value for respiratory infection management.
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Affiliation(s)
- Donia Bouzid
- Université de Paris, IAME, INSERM, Paris, France.,Université de Paris, Service d'Accueil des Urgences, Hôpital Bichat Claude Bernard, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Jordi Vila
- Department of Clinical Microbiology, Biomedical Diagnostic Centre, Hospital Clinic, School of Medicine, University of Barcelona, Institute of Global Health, Barcelona, Spain
| | - Glen Hansen
- Microbiology and Molecular Diagnostics, Hennepin County Medical Center, Department of Infectious Diseases, University of Minnesota School of Medicine, Minneapolis, MN, USA.,Department of Pathology & Laboratory Medicine, University of Minnesota, School of Medicine, Minneapolis, MN, USA
| | | | - Josep Pareja
- STAT-Dx Life, S.L. (a QIAGEN Company), Medical Affairs, Barcelona, Spain
| | - Sonia N Rao
- QIAGEN Inc., Medical Affairs, Germantown, MD, USA
| | - Benoit Visseaux
- Université de Paris, IAME, INSERM, Paris, France.,Université de Paris, Laboratoire de Virologie, Hôpital Bichat Claude Bernard, Assistance Publique-Hôpitaux de Paris, Paris, France
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Madi NM, Al-Adwani A. Human bocavirus (HBoV) in Kuwait: molecular epidemiology and clinical outcome of the virus among patients with respiratory diseases. J Med Microbiol 2020; 69:1005-1012. [PMID: 32579103 PMCID: PMC7481742 DOI: 10.1099/jmm.0.001219] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/06/2020] [Indexed: 12/22/2022] Open
Abstract
Introduction. Globally, human bocavirus (HBoV) has been detected in respiratory samples from patients suffering from upper and lower respiratory diseases. In Kuwait, little is known about the epidemiological and clinical characterization of the virus and genetic characterization of the virus as a respiratory pathogen is unknown.Aim. This study aims to explore the molecular epidemiology and clinical features of HBoV isolates in patients with respiratory diseases.Methodology. Retrospectively, between 2018 and 2020, 5941 respiratory samples from patients with respiratory diseases were screened for respiratory viruses using multiplex real-time PCR. Samples that were positive for HBoV were then subjected to NP1 and VP1/PV2 phylogenetic analysis.Results. HBoV was detected in 1.9 % of the patients, with a peak incidence of infection among children <1 year old. Co-infection with other respiratory viruses was observed in 56.8 % of HBoV-positive patients. Fever, cough and respiratory distress were the most common clinical features of HBoV infection. Phylogenetic analysis of the Kuwaiti HBoV isolates revealed that all the isolates were of the HBoV-1 genotype, with slight sequence variations among the isolates.Conclusion. This study illustrated the predominance of the HBoV-1 genotype in patients with respiratory diseases in Kuwait with minimal genetic variability. It also highlighted the clinical features of HBoV-1 infection, verifying its role in respiratory diseases.
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Affiliation(s)
- Nada M. Madi
- Virology Unit, Department of Microbiology, Faculty of Medicine, Kuwait University, Kuwait
| | - Anfal Al-Adwani
- Virology Unit, Department of Microbiology, Faculty of Medicine, Kuwait University, Kuwait
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Human bocavirus in children hospitalized for acute respiratory tract infection in Rome. World J Pediatr 2020; 16:293-298. [PMID: 31776891 PMCID: PMC7091143 DOI: 10.1007/s12519-019-00324-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 11/01/2019] [Indexed: 01/06/2023]
Abstract
BACKGROUND The role of human bocavirus (HBoV) as a respiratory pathogen has not been fulfilled yet. We aimed to describe clinical and serological characteristics of children with HBoV hospitalized for acute respiratory tract infection and to evaluate whether differences occur between HBoV alone and in co-infection. METHODS We retrospectively reviewed data from 60 children (median age of 6.2 months, range 0.6-70.9) hospitalized for acute respiratory symptoms, with HBoV detected from a respiratory sample, using a reverse transcriptase-PCR for 14 respiratory viruses (including respiratory syncytial virus (RSV), influenza virus A and B, human coronavirus OC43, 229E, NL-63 and HUK1, adenovirus, rhinovirus, parainfluenza virus1-3, and human metapneumovirus). RESULTS HBoV was detected alone in 29 (48.3%) patients, while in co-infection with other viruses in 31 patients (51.7%), with a peak between December and January. Among the 60 patients, 34 were bronchiolitis, 19 wheezing, 3 pneumonia, 2 upper respiratory tract infection, and 2 whooping cough. Seven children (11.6%) required admission to the paediatric intensive care unit (PICU) for respiratory failure. No differences was observed in age, family history for atopy and/or asthma, clinical presentations, chest X-ray, or laboratory findings in children with HBoV alone vs. multiple viral detection. RSV was the most frequently co-detected virus (61.3%). When compared with HBoV detection alone, the co-detection of RSV and HBoV was associated with male sex (P = 0.013), younger age (P = 0.01), and lower blood neutrophil count (P = 0.032). CONCLUSIONS HBoV can be detected alone and in co-infection respiratory samples of children with an acute respiratory tract infection. A cause-effect relationship between HBoV and respiratory infection is not clear, so further studies are needed to clarify this point.
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Verbeke V, Reynders M, Floré K, Vandewal W, Debulpaep S, Sauer K, Cardoen F, Padalko E. Human bocavirus infection in Belgian children with respiratory tract disease. Arch Virol 2019; 164:2919-2930. [PMID: 31520220 PMCID: PMC7087345 DOI: 10.1007/s00705-019-04396-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 08/05/2019] [Indexed: 02/07/2023]
Abstract
Human bocavirus (HBoV) has been detected primarily in children with acute lower respiratory tract disease (LRTD), but its occurrence, clinical profile, and role as a causative agent of RTD are not clear. The aim of this study was to investigate the prevalence and the potential clinical relevance of HBoV. Using molecular tests, we tested 1352 nasopharyngeal samples obtained between October 1, 2017 and April 30, 2018 from children up to the age of 16 with RTD for the presence of HBoV DNA and 20 other respiratory pathogens at three different hospitals in Belgium. HBoV was detected in 77 children with a median age of 10.6 months. Consecutive samples were available for 15 HBoV-positive children and showed persistent HBoV positivity in four of them. Monoinfection was observed in six infants. Four of them were born prematurely and were infected during hospitalization at the neonatal intensive care unit (NICU). Only one of these six monoinfected children was diagnosed with recurrent wheezing due to HBoV. This child was carried to term and had a high viral load. Coinfections, most frequently with rhinovirus (52.1%) and adenovirus (49.3%), were observed in 72 patients. In seventeen of them in which HBoV was present at high viral load or higher viral load than its copathogens, bronchi(oli)tis (n = 8), recurrent wheezing (n = 8) or episodic wheezing (n = 1) were diagnosed. Our results suggest that HBoV infection at high viral load in infants is associated with wheezing (P = 0.013, Cramer's V = 0.613).
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Affiliation(s)
- Vanessa Verbeke
- Department of Medical Microbiology, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
| | | | | | - Wouter Vandewal
- AZ Sint-Lucas Bruges, Sint-Lucaslaan 29, 8310 Brugge, Belgium
| | - Sara Debulpaep
- Department of Pediatrics, Ghent University Hospital, Ghent, Belgium
| | - Kate Sauer
- AZ Sint-Jan Bruges, Ruddershove 10, 8000 Brugge, Belgium
| | | | - Elizaveta Padalko
- Department of Medical Microbiology, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
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Lalueza A, Folgueira D, Muñoz-Gallego I, Trujillo H, Laureiro J, Hernández-Jiménez P, Moral-Jiménez N, Castillo C, Ayuso B, Díaz-Pedroche C, Torres M, Arrieta E, Arévalo-Cañas C, Madrid O, Lumbreras C. Influence of viral load in the outcome of hospitalized patients with influenza virus infection. Eur J Clin Microbiol Infect Dis 2019; 38:667-673. [PMID: 30820840 PMCID: PMC7102091 DOI: 10.1007/s10096-019-03514-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 02/14/2019] [Indexed: 01/30/2023]
Abstract
The role of viral load in the outcome of patients requiring hospital admission due to influenza is not well established. We aim to assess if there is an association between the viral load and the outcome in hospitalized patients with a confirmed influenza virus infection. A retrospective observational study including all adult patients who were hospitalized in our center with a confirmed influenza virus infection from January to May 2016. Viral load was measured by real-time reverse-transcriptase–polymerase chain reaction (rRT-PCR) cycle threshold (Ct) value on upper respiratory tract samples. Its value was categorized into three groups (low Ct, ≤ 20; intermediate Ct, > 20–30; and high Ct, > 30). Two hundred thirty-nine patients were included. Influenza A/H1N1pdm09 was isolated in 207 cases (86.6%). The mean Ct value was 26.69 ± 5.81. The viral load was higher in the unvaccinated group when compared with the vaccinated patients (Ct 25.17 ± 5.55 vs. 27.58 ± 4.97, p = 0.004). Only 27 patients (11.29%) presented a high viral load. Patients with a high viral load more often showed abnormal findings on chest X-ray (p = 0.015) and lymphopenia (p = 0.097). By contrast, there were no differences between the three groups (according to viral load), in associated pneumonia, respiratory failure, need for mechanical ventilation, sepsis, or in-hospital mortality. Our findings suggest that in patients admitted to the hospital with confirmed influenza virus infection (mostly A/H1N1pdm09), a high viral load is associated with a higher presence of abnormal findings on chest X-ray but not with a significant worse prognosis. In these cases, standardized quantitative PCR could be useful.
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Affiliation(s)
- Antonio Lalueza
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain. .,Department of Medicine, School of Medicine, Complutense University, Madrid, Spain. .,Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.
| | - Dolores Folgueira
- Department of Medicine, School of Medicine, Complutense University, Madrid, Spain.,Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,Department of Microbiology, University Hospital 12 de Octubre, Madrid, Spain
| | - Irene Muñoz-Gallego
- Department of Microbiology, University Hospital 12 de Octubre, Madrid, Spain
| | - Hernando Trujillo
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | - Jaime Laureiro
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | - Pilar Hernández-Jiménez
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | | | - Cristina Castillo
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | - Blanca Ayuso
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | - Carmen Díaz-Pedroche
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain.,Department of Medicine, School of Medicine, Complutense University, Madrid, Spain
| | - Marta Torres
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | - Estibaliz Arrieta
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | - Coral Arévalo-Cañas
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | - Olaya Madrid
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain
| | - Carlos Lumbreras
- Department of Internal Medicine, University Hospital 12 de Octubre, Av. Córdoba km 5400, 28041, Madrid, Spain.,Department of Medicine, School of Medicine, Complutense University, Madrid, Spain.,Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,Infectious Diseases Unit, University Hospital 12 de Octubre, Madrid, Spain
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