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  • 1
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    Molecular evolution of respiratory syncytial virus subgroup A genotype NA1 and ON1 attachment glycoprotein ( G ) gene in central Vietnam
    Elsevier BV ; 2016
    In:  Infection, Genetics and Evolution Vol. 45 ( 2016-11), p. 437-446
    Details
    In: Infection, Genetics and Evolution, Elsevier BV, Vol. 45 ( 2016-11), p. 437-446
    Materialart: Online-Ressource
    ISSN: 1567-1348
    URL: Article
    DOI: 10.1016/j.meegid.2016.10.010
    Sprache: Englisch
    Verlag: Elsevier BV
    Publikationsdatum: 2016
    ZDB Id: 2057622-5
    SSG: 12
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  • 2
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    Association of RSV-A ON1 genotype with Increased Pediatric Acute Lower Respiratory Tract Infection in Vietnam
    Springer Science and Business Media LLC ; 2016
    In:  Scientific Reports Vol. 6, No. 1 ( 2016-06-16)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 6, No. 1 ( 2016-06-16)
    Kurzfassung: Since the initial discovery of RSV-A ON1 in Canada in 2010, ON1 has been reported worldwide, yet information regarding its clinical impact and severity has been controversial. To investigate the clinical relevance of RSV-A ON1,acute respiratory infection (ARI) cases enrolled to our population-based prospective pediatric ARI surveillance at Khanh Hoa General Hospital, Central Vietnam from January 2010 through December 2012 were studied. Clinical-epidemiological information and nasopharyngeal samples were collected. Multiplex PCR assays were performed for screening 13 respiratory viruses. RSV-positive samples were further tested for subgroups (A/B) and genotypes information by sequencing the G-glycoprotein 2nd hypervariable region. Statistical analysis was performed to evaluate the clinical-epidemiological characteristics of RSV-A ON1. A total of 1854 ARI cases were enrolled and 426 (23.0%) of them were RSV-positive. During the study period, RSV-A and B had been co-circulating. NA1 was the predominant RSV-A genotype until the appearance of ON1 in 2012. RSV-related ARI hospitalization incidence significantly increased after the emergence of ON1. Moreover, multivariate analysis revealed that risk of lower respiratory tract infection was 2.26 (95% CI: 1.37–3.72) times, and radiologically-confirmed pneumonia was 1.98 (95% CI: 1.01–3.87) times greater in ON1 compared to NA1 cases. Our result suggested that ON1 ARI cases were clinically more severe than NA1.
    Materialart: Online-Ressource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/srep27856
    Sprache: Englisch
    Verlag: Springer Science and Business Media LLC
    Publikationsdatum: 2016
    ZDB Id: 2615211-3
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  • 3
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    Sensory defects and developmental delay among children with congenital rubella syndrome
    Springer Science and Business Media LLC ; 2017
    In:  Scientific Reports Vol. 7, No. 1 ( 2017-04-13)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 7, No. 1 ( 2017-04-13)
    Kurzfassung: This study investigated the features of developmental difficulties combined with sensory defects in children with congenital rubella syndrome (CRS). Following a large rubella outbreak in Khanh Hoa Province, Vietnam, in 2011, we enrolled 41 children with CRS from September 2011 through May 2013. Fourteen participants died and six became untraceable by October 2013; the remaining 21 children were followed up from 2013 to 2015. Thirteen and seven participants had hearing and functional ophthalmological impairment, respectively. Developmental difficulties were suspected in 19 (95%) children who failed in at least one area of the Ages and Stages Questionnaire (ASQ) and/or Denver II in 2013 and/or 2015. Developmental difficulties were frequently identified in the ASQ communication domain (n = 14 in 2013) and Denver II language area (n = 13 in 2013). Seven (41%) participants were suspected of having autism spectrum disorder (ASD) in 2013 by the Modified Checklist for Autism in Toddlers. In 2015, proportions of children failing the problem-solving (62%) and personal–social (62%) domains had increased and two of 13 were diagnosed with ASD by the Childhood Autism Rating Scale, Second Edition. Developmental difficulties were suspected in most children with CRS, including autism largely combined with sensory dysfunction.
    Materialart: Online-Ressource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/srep46483
    Sprache: Englisch
    Verlag: Springer Science and Business Media LLC
    Publikationsdatum: 2017
    ZDB Id: 2615211-3
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  • 4
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    Asthma, Rhinoconjunctivitis, Eczema, and the Association with Perinatal Anthropometric Factors in Vietnamese Children
    Springer Science and Business Media LLC ; 2019
    In:  Scientific Reports Vol. 9, No. 1 ( 2019-02-25)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 9, No. 1 ( 2019-02-25)
    Kurzfassung: Few studies have investigated possible causative and protective factors associated with allergic diseases in resource-limited countries, Southeast Asia. We estimated the current prevalence of asthma, rhinoconjunctivitis, and eczema among 6-year-old children, and identified anthropometric factors associated with asthma, rhinoconjunctivitis and eczema, in South-Central Vietnam. A birth cohort study recruited 1,999 children born at a provincial hospital in Nha Trang, Vietnam between May 2009 and May 2010. A 6-year follow-up survey was conducted where clinical, familial, and environmental information was collected by interviewing caregivers using a standardized form based on the International Study of Asthma and Allergies in Childhood, Phase Three Core and Environmental Questionnaire for 6–7-year-old children. The odds ratios of asthma, rhinoconjunctivitis, and eczema for anthropometric factors were estimated using logistic regression analysis. In total, 1202 children participated in the follow-up survey. The proportions of children who had current asthma, rhinoconjunctivitis, and eczema were 5.1% (95% confidence interval [CI] 3.9–6.5%), 11.5% (9.7–13.4%), and 6.7% (5.3–8.2%), respectively. Low birthweight (adjusted odds ratio 5.12, 95% CI 1.92–13.64) was independently associated with increased risk of eczema. Further studies are necessary to understand the involved mechanism.
    Materialart: Online-Ressource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-019-39658-5
    Sprache: Englisch
    Verlag: Springer Science and Business Media LLC
    Publikationsdatum: 2019
    ZDB Id: 2615211-3
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  • 5
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    Socio-demographic factors of cesarean births in Nha Trang city, Vietnam: a community-based survey
    Springer Science and Business Media LLC ; 2020
    In:  Tropical Medicine and Health Vol. 48, No. 1 ( 2020-12)
    Details
    In: Tropical Medicine and Health, Springer Science and Business Media LLC, Vol. 48, No. 1 ( 2020-12)
    Kurzfassung: The cesarean section rate in Vietnam has been increasing especially in urban area. However, limited evidence identified regarding socio-demographic factors of the cesarean section birth. The objective of this study was to determine the current cesarean birth rate and the associated socio-demographic factors among mothers in Nha Trang city, south-central Vietnam. Methods A community-based cross-sectional study was conducted between October and November in 2016 as part of a Streptococcus pneumoniae carriage survey conducted in 27 communes of Nha Trang city. From each commune, 120 mothers and their children less than 2 years old were randomly selected. Mothers were asked to answer standardized questions regarding socio-demographic information and mode of birth. Multivariate logistic regression was adopted to examine associations between socio-demographic variables and mode of birth. Results Of 3148 participants, the number of cesarean births was 1396 (44.3 %). Older maternal age (≥ 30 years old), having another child going to school or kindergarten, monthly income more than 644 USD, gestational weeks at birth over 42 weeks, and low ( 〈 2500 g) or high (≥ 3500 g) birth weight were associated with higher likelihood of cesarean births. Conclusion The CS rate obtained in this study was more than twice of what is recommended by the World Health Organization, which is consistent with the previous nation-wide study in Viet Nam. Further monitoring is suggested to examine the non-medical reason for the increased CS rate.
    Materialart: Online-Ressource
    ISSN: 1349-4147
    URL: Article
    DOI: 10.1186/s41182-020-00239-2
    Sprache: Englisch
    Verlag: Springer Science and Business Media LLC
    Publikationsdatum: 2020
    ZDB Id: 2209835-5
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  • 6
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    Impact of 2009 pandemic influenza among Vietnamese children based on a population‐based prospective surveillance from 2007 to 2011
    Wiley ; 2014
    In:  Influenza and Other Respiratory Viruses Vol. 8, No. 4 ( 2014-07), p. 389-396
    Details
    In: Influenza and Other Respiratory Viruses, Wiley, Vol. 8, No. 4 ( 2014-07), p. 389-396
    Kurzfassung: Influenza virus is one of the major viral pathogens causing pediatric acute respiratory infection ( ARI ). The spread of pandemic influenza A (A(H1N1)pdm09) in 2009 around the globe had a huge impact on global health. Objective To investigate the impact of A(H1N1)pdm09 on pediatric ARI in Vietnam. Study design An ongoing population‐based prospective surveillance in central Vietnam was used. All children aged 〈 15 years residing in Nha Trang city, enrolled to the ARI surveillance in Khanh Hoa General Hospital, from February 2007 through March 2011 were studied. Clinical data and nasopharyngeal swab samples were collected. Influenza A was detected and genotyped by multiplex polymerase chain reaction assays and sequencing. Results Among enrolled 2736 hospitalized ARI cases, 354 (13%) were positive for influenza A. Genotyping results revealed that seasonal H3N2 and H1N1 (sea‐H1N1) viruses were cocirculating before A(H1N1)pdm09 appeared in July 2009. The A(H1N1)pdm09 replaced the sea‐H1N1 after the pandemic. The majority of influenza A cases (90%) were aged 〈 5 years with incidence rate of 537 (387–775) per 100 000 population. Annual incidence rates of hospitalized influenza cases for pre‐, initial and post‐pandemic periods among children aged 〈 5 year were 474, 452, and 387 per 100 000, respectively. Children with A(H1N1)pdm09 were elder, visited the hospital earlier, less frequently had severe signs, and were less frequently associated with viral coinfection compared with seasonal influenza cases. Conclusions The A(H1N1)pdm09 did not increase the influenza annual hospitalization incidence or disease severity compared with seasonal influenza among pediatric ARI cases in central Vietnam.
    Materialart: Online-Ressource
    ISSN: 1750-2640 , 1750-2659
    URL: Issue
    URL: Article
    DOI: 10.1111/irv.2014.8.issue-4
    DOI: 10.1111/irv.12244
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2014
    ZDB Id: 2272349-3
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  • 7
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    Viral Acute Respiratory Illnesses in Young Infants Increase the Risk of Respiratory Readmission
    Ovid Technologies (Wolters Kluwer Health) ; 2018
    In:  Pediatric Infectious Disease Journal Vol. 37, No. 12 ( 2018-12), p. 1217-1222
    Details
    In: Pediatric Infectious Disease Journal, Ovid Technologies (Wolters Kluwer Health), Vol. 37, No. 12 ( 2018-12), p. 1217-1222
    Kurzfassung: Respiratory viruses cause acute respiratory illness (ARI) in early childhood, but their effect on subsequent ARI admissions is not fully understood. This study aimed to determine the association between initial ARI admission because of viruses including human rhinovirus (HRV), respiratory syncytial virus (RSV), human adenovirus (HAdV) and human metapneumovirus (hMPV) and the risk of ARI readmission in children. Methods: Clinical information and nasopharyngeal swab samples were collected from children 〈 2 years old at their initial ARI admission in Nha Trang, Vietnam, from January 2007 to April 2012. The incidence of ARI readmission during the follow-up period (initial admission to 5 years of age) was compared between children with and without 1 of 13 respiratory viruses (influenza virus A, influenza virus B, RSV, hMPV, parainfluenza virus-1, parainfluenza virus-2, parainfluenza virus-3 and parainfluenza virus-4, HRV, human coronavirus-229E, human coronavirus-OC43, HAdV and human bocavirus) at initial admission. Results: A total of 1941 children were enrolled in the study. Viruses were detected in 1254 (64.6%) children at enrollment; HRV, RSV, HAdV and hMPV were detected in 499 (25.7%), 439 (22.6%), 156 (8.0%) and 47 (2.4%) children, respectively. During the follow-up period (4572.7 person-years), 277 children were readmitted with ARI. Virus-related ARI initial admission was associated with an increased risk of ARI readmission for children who were initially admitted before 6 months of age (adjusted rate ratio, 1.6; 95% confidence interval: 1.1–2.5). HAdV (4.6; 1.8–11.9), hMPV (20.4; 6.2–66.9) and HRV (1.6; 1.0–2.4) were independently associated with the outcome. These associations were not observed for children whose initial admission occurred after 6 months of age. Conclusions: HAdV-, hMPV- and HRV-related initial ARI admissions, when occurring during early infancy, increased the risk of subsequent ARI-related readmission.
    Materialart: Online-Ressource
    ISSN: 0891-3668
    URL: Article
    DOI: 10.1097/INF.0000000000001998
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2018
    ZDB Id: 2020216-7
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  • 8
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    Influenza B associated paediatric acute respiratory infection hospitalization in central vietnam
    Wiley ; 2019
    In:  Influenza and Other Respiratory Viruses Vol. 13, No. 3 ( 2019-05), p. 248-261
    Details
    In: Influenza and Other Respiratory Viruses, Wiley, Vol. 13, No. 3 ( 2019-05), p. 248-261
    Kurzfassung: Influenza B is one of the major etiologies for acute respiratory infections ( ARI ) among children worldwide; however, its clinical‐epidemiological information is limited. We aimed to investigate the hospitalization incidence and clinical‐epidemiological characteristics of influenza B‐associated paediatric ARI s in central Vietnam. Methods We collected clinical‐epidemiological information and nasopharyngeal swabs from ARI children hospitalized at Khanh Hoa General Hospital, Nha Trang, Vietnam from February 2007 through June 2013. Nasopharyngeal samples were screened for 13 respiratory viruses using Multiplex‐ PCR s. Influenza B‐confirmed cases were genotyped by Haemagglutinin gene sequencing. We analyzed the clinical‐epidemiological characteristics of influenza B Lineages (Victoria/Yamagata) and WHO Groups. Results In the pre‐A/H1N1pdm09 period, influenza B‐associated ARI hospitalization incidence among children under five was low, ranging between 14.7 and 80.7 per 100 000 population. The incidence increased to between 51.4 and 330 in the post‐A/H1N1pdm09. Influenza B ARI cases were slightly older with milder symptoms. Both Victoria and Yamagata lineages were detected before the A/H1N1pdm09 outbreak; however, Victoria lineage became predominant in 2010‐2013 (84% Victoria vs 16% Yamagata). Victoria and Yamagata lineages did not differ in demographic and clinical characteristics. In Victoria lineage, Group1 ARI cases were clinically more severe compared to Group5, presenting a greater proportion of wheeze, tachypnea, and lower respiratory tract infection. Conclusions The current results highlight the increased incidence of influenza B‐related ARI hospitalization among children in central Vietnam in the post‐A/H1N1pdm09 era. Furthermore, the difference in clinical severity between Victoria lineage Group1 and 5 implies the importance of influenza B genetic variation on clinical presentation.
    Materialart: Online-Ressource
    ISSN: 1750-2640 , 1750-2659
    URL: Issue
    URL: Article
    DOI: 10.1111/irv.2019.13.issue-3
    DOI: 10.1111/irv.12626
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2019
    ZDB Id: 2272349-3
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  • 9
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    Clinical manifestations of congenital rubella syndrome: A review of our experience in Vietnam
    Elsevier BV ; 2019
    In:  Vaccine Vol. 37, No. 1 ( 2019-01), p. 202-209
    Details
    In: Vaccine, Elsevier BV, Vol. 37, No. 1 ( 2019-01), p. 202-209
    Materialart: Online-Ressource
    ISSN: 0264-410X
    URL: Article
    DOI: 10.1016/j.vaccine.2018.11.046
    Sprache: Englisch
    Verlag: Elsevier BV
    Publikationsdatum: 2019
    ZDB Id: 1468474-3
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  • 10
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    A decade of human metapneumovirus in hospitalized children with acute respiratory infection: molecular epidemiology in central Vietnam, 2007–2017
    Springer Science and Business Media LLC ; 2023
    In:  Scientific Reports Vol. 13, No. 1 ( 2023-09-21)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 13, No. 1 ( 2023-09-21)
    Kurzfassung: Human metapneumovirus (hMPV) can cause severe acute respiratory infection (ARI). We aimed to clarify the clinical and molecular epidemiological features of hMPV. We conducted an ARI surveillance targeting hospitalized children aged 1 month to 14 years in Nha Trang, Vietnam. Nasopharyngeal swabs were tested for respiratory viruses with PCR. We described the clinical characteristics of hMPV patients in comparison with those with respiratory syncytial virus (RSV) and those with neither RSV nor hMPV, and among different hMPV genotypes. Among 8822 patients, 278 (3.2%) were hMPV positive, with a median age of 21.0 months (interquartile range: 12.7–32.5). Among single virus-positive patients, hMPV cases were older than patients with RSV ( p 〈 0.001) and without RSV ( p = 0.003). The proportions of clinical pneumonia and wheezing in hMPV patients resembled those in RSV patients but were higher than in non-RSV non-hMPV patients. Seventy percent (n = 195) were genotyped (A2b: n = 40, 20.5%; A2c: n = 99, 50.8%; B1: n = 37, 19%; and B2: n = 19, 9.7%). The wheezing frequency was higher in A2b patients (76.7%) than in those with other genotypes ( p = 0.033). In conclusion, we found a moderate variation in clinical features among hMPV patients with various genotypes. No seasonality was observed, and the multiple genotype co-circulation was evident.
    Materialart: Online-Ressource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-023-42692-z
    Sprache: Englisch
    Verlag: Springer Science and Business Media LLC
    Publikationsdatum: 2023
    ZDB Id: 2615211-3
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