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  • 1
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S680-S687
    Abstract: Respiratory syncytial virus (RSV) is a major cause of acute lower respiratory infection (ALRI) in young children aged & lt;5 years. Methods We aimed to identify the global inpatient and outpatient cost of management of RSV-ALRI in young children to assist health policy makers in making decisions related to resource allocation for interventions to reduce severe morbidity and mortality from RSV in this age group. We searched 3 electronic databases including Global Health, Medline, and EMBASE for studies reporting cost data on RSV management in children under 60 months from 2000 to 2017. Unpublished data on the management cost of RSV episodes were collected through collaboration with an international working group (RSV GEN) and claim databases. Results We identified 41 studies reporting data from year 1987 to 2017, mainly from Europe, North America, and Australia, covering the management of a total of 365 828 RSV disease episodes. The average cost per episode was €3452 (95% confidence interval [CI], 3265–3639) and €299 (95% CI, 295–303) for inpatient and outpatient management without follow-up, and it increased to €8591(95% CI, 8489–8692) and €2191 (95% CI, 2190–2192), respectively, with follow-up to 2 years after the initial event. Conclusions Known risk factors (early and late preterm birth, congenital heart disease, chronic lung disease, intensive care unit admission, and ventilator use) were associated with €4160 (95% CI, 3237–5082) increased cost of hospitalization. The global cost of inpatient and outpatient RSV ALRI management in young children in 2017 was estimated to be approximately €4.82 billion (95% CI, 3.47–7.93), 65% of these in developing countries and 55% of global costs accounted for by hospitalization. We have demonstrated that RSV imposed a substantial economic burden on health systems, governments, and the society.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
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  • 2
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S599-S605
    Abstract: Respiratory syncytial virus (RSV) is a leading cause of respiratory tract infection (RTI) in young children. Registries provide opportunities to explore RSV epidemiology and burden. Methods We explored routinely collected hospital data on RSV in children aged & lt; 5 years in 7 European countries. We compare RSV-associated admission rates, age, seasonality, and time trends between countries. Results We found similar age distributions of RSV-associated hospital admissions in each country, with the highest burden in children  & lt; 1 years old and peak at age 1 month. Average annual rates of RTI admission were 41.3–112.0 per 1000 children aged  & lt; 1 year and 8.6–22.3 per 1000 children aged  & lt; 1 year. In children aged  & lt; 5 years, 57%–72% of RTI admissions with specified causal pathogen were coded as RSV, with 62%–87% of pathogen-coded admissions in children  & lt; 1 year coded as RSV. Conclusions Our results demonstrate the benefits and limitations of using linked routinely collected data to explore epidemiology and burden of RSV. Our future work will use these data to generate estimates of RSV burden using time-series modelling methodology, to inform policymaking and regulatory decisions regarding RSV immunization strategy and monitor the impact of future vaccines.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
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  • 3
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S577-S583
    Abstract: Respiratory syncytial virus–associated acute respiratory infection (RSV-ARI) constitutes a substantial disease burden in older adults aged ≥65 years. We aimed to identify all studies worldwide investigating the disease burden of RSV-ARI in this population. We estimated the community incidence, hospitalization rate, and in-hospital case-fatality ratio (hCFR) of RSV-ARI in older adults, stratified by industrialized and developing regions, using data from a systematic review of studies published between January 1996 and April 2018 and 8 unpublished population-based studies. We applied these rate estimates to population estimates for 2015 to calculate the global and regional burdens in older adults with RSV-ARI in the community and in hospitals for that year. We estimated the number of in-hospital deaths due to RSV-ARI by combining hCFR data with hospital admission estimates from hospital-based studies. In 2015, there were about 1.5 million episodes (95% confidence interval [CI], .3 million–6.9 million) of RSV-ARI in older adults in industrialized countries (data for developing countries were missing), and of these, approximately 14.5% (214 000 episodes; 95% CI, 100 000–459 000) were admitted to hospitals. The global number of hospital admissions for RSV-ARI in older adults was estimated at 336 000 hospitalizations (uncertainty range [UR] , 186 000–614 000). We further estimated about 14 000 in-hospital deaths (UR, 5000–50 000) related to RSV-ARI globally. The hospital admission rate and hCFR were higher for those aged ≥65 years than for those aged 50–64 years. The disease burden of RSV-ARI among older adults is substantial, with limited data from developing countries. Appropriate prevention and management strategies are needed to reduce this burden.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
    Location Call Number Limitation Availability
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  • 4
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S666-S671
    Abstract: Targeted metagenomics using strand-specific libraries with target enrichment is a sensitive, generalized approach to pathogen sequencing and transcriptome profiling. Using this method, we recovered 13 (76%) complete human respiratory syncytial virus (RSV) genomes from 17 clinical respiratory samples, reconstructed the phylogeny of the infecting viruses, and detected differential gene expression between 2 RSV subgroups, specifically, a lower expression of the P gene and a higher expression of the M2 gene in RSV-A than in RSV-B. This methodology can help to relate viral genetics to clinical phenotype and facilitate ongoing population-level RSV surveillance and vaccine development. Clinical Trials Registration. NCT03627572 and NCT03756766.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
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  • 5
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S628-S633
    Abstract: Recurrent wheeze and asthma in childhood are commons causes of chronic respiratory morbidity globally. We aimed to explore the association between respiratory syncytial virus (RSV) infection in early life and subsequent respiratory sequelae up to age 12 years. Methods We estimated the strength of association by 3 control groups and 3 follow-up age groups, with data from studies published between January 1995 and May 2018. We also estimated associations by diagnostic criteria, age at infection, and high-risk population. Results Overall, we included 41 studies. A statistically significant association was observed between early life RSV infection and subsequent childhood recurrent wheeze, in comparison to those who were healthy or those without respiratory symptoms: OR 3.05 (95% confidence interval [CI], 2.50–3.71) for 0 to & lt;36 months follow-up age; OR 2.60 (95% CI, 1.67–4.04) for 36–72 months; and OR 2.14 (95% CI, 1.33–3.45) for 73–144 months. For the subsequent development of asthma, a statistically significant association was observed only in relation to those aged 73–144 months at follow-up: OR 2.95 (95% CI, 1.96–4.46). Conclusions Further studies using standardized definitions and from diverse settings are needed to elucidate the role of confounders and provide more robust estimates.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
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  • 6
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S688-S694
    Abstract: Respiratory syncytial virus (RSV) is a leading cause of respiratory tract illness in young children and a major cause of hospital admissions globally. Methods Here we fit age-structured transmission models with immunity propagation to data from the Netherlands (2012–2017). Data included nationwide hospitalizations with confirmed RSV, general practitioner (GP) data on attendance for care from acute respiratory infection, and virological testing of acute respiratory infections at the GP. The transmission models, equipped with key parameter estimates, were used to predict the impact of maternal and pediatric vaccination. Results Estimates of the basic reproduction number were generally high (R0 & gt; 10 in scenarios with high statistical support), while susceptibility was estimated to be low in nonelderly adults ( & lt;10% in persons 20–64 years) and was higher in older adults (≥65 years). Scenario analyses predicted that maternal vaccination reduces the incidence of infection in vulnerable infants ( & lt;1 year) and shifts the age of first infection from infants to young children. Conclusions Pediatric vaccination is expected to reduce the incidence of infection in infants and young children (0–5 years), slightly increase incidence in 5 to 9-year-old children, and have minor indirect benefits.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
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  • 7
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S613-S619
    Abstract: Respiratory syncytial virus (RSV) is the most common viral pathogen associated with acute lower respiratory infections (ALRIs), with significant childhood morbidity and mortality worldwide. Estimates reporting RSV-associated ALRI (RSV-ALRI) severity in children with congenital heart disease (CHD) are lacking, thus warranting the need to summarize the available data. We identified relevant studies to summarize the findings and conducted a meta-analysis of available data on RSV-associated ALRI hospitalizations in children aged & lt;5 years, comparing those with underlying CHD to those without CHD. Methods We conducted a systematic search of existing relevant literature and identified studies reporting hospitalization of children aged & lt;5 years with RSV-ALRI with underlying or no CHD. We summarized the data and conducted (where possible) a random-effects meta-analysis to compare the 2 groups. Results We included 18 studies that met our strict eligibility criteria. The risk of severe RSV-ALRI (odds ratio, 2.2; 95% confidence interval [CI], 1.6–2.8), the rate of hospitalization (incidence rate ratio, 2.8; 95% CI, 1.9–4.1), and the case-fatality ratio (risk ratio [RR] , 16.5; 95% CI, 13.7–19.8) associated with RSV-ALRI was higher among children with underlying CHD as compared to those without no CHD. The risk of admission to the intensive care unit (RR, 3.9; 95% CI, 3.4–4.5), need for supplemental oxygen therapy (RR, 3.4; 95% CI, .5–21.1), and need for mechanical ventilation (RR, 4.1; 95% CI, 2.1–8.0) was also higher among children with underlying CHD. Conclusion This is the most detailed review to show more-severe RSV-ALRI among children aged & lt;5 years with underlying CHD, especially hemodynamically significant underlying CHD, as compared those without CHD, supporting a need for improved RSV prophylactics and treatments that also have efficacy in children older than 1 year.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
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  • 8
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S592-S598
    Abstract: Bronchiolitis is the commonest cause of respiratory related hospital admissions in young children. This study aimed to describe temporal trends in bronchiolitis admissions for children under 2 years of age in Scotland by patient characteristics, socioeconomic deprivation, and duration of admission. Methods The national hospital admissions database for Scotland was used to extract data on all bronchiolitis admissions (International Classification of Disease, Tenth Revision, code J21) in children & lt;2 years of age from 2001 to 2016. Deprivation quintiles were classified using the 2011 Scottish Index of Multiple Deprivation. Results Over the 15-year study period, admission rates for children under 2 years old increased 2.20-fold (95% confidence interval [CI], 1.4–3.6-fold) from 17.2 (15.9–18.5) to 37.7 (37.4–38.1) admissions per 1000 children per year. Admissions peaked in infants aged 1 month, and in those born in the 3 months preceding the peak bronchiolitis month—September, October, and November. Admissions from the most-deprived quintile had the highest overall rate of admission, at 40.5 per 1000 children per year (95% CI, 39.5–41.5) compared with the least-deprived quintile, at 23.0 admissions per 1000 children per year (22.1–23.9). The most-deprived quintile had the greatest increase in admissions over time, whereas the least-deprived quintile had the lowest increase. Zero-day admissions, defined as admission and discharge within the same calendar date, increased 5.3-fold (5.1–5.5) over the study period, with the highest increase in patients in the most-deprived quintile. Conclusions This study provides baseline epidemiological data to aid policy makers in the strategic planning of preventative interventions. With the majority of bronchiolitis caused by respiratory syncytial virus (RSV), and several RSV vaccines and monoclonal antibodies currently in clinical trials, understanding national trends in bronchiolitis admissions is an important proxy for determining potential RSV vaccination strategies.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
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  • 9
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S672-S679
    Abstract: Bronchiolitis is the leading cause of hospital admission for respiratory disease among infants aged & lt;1 year. Clinical practice guidelines can benefit patients by reducing the performance of unnecessary tests, hospital admissions, and treatment with lack of a supportive evidence base. This review aimed to identify current clinical practice guidelines worldwide, appraise their methodological quality, and discuss variability across guidelines for the diagnosis and management of bronchiolitis. Methods A systematic literature review of electronic databases EMBASE, Global Health, and Medline was performed. Manual searches of the gray literature, national pediatric society websites, and guideline-focused databases were performed, and select international experts were contacted to identify additional guidelines. The Appraisal of Guidelines for Research and Evaluation assessment tool was used by 2 independent reviewers to appraise each guideline. Results Thirty-two clinical practice guidelines met the selection criteria. Quality assessment revealed significant shortcomings in a number of guidelines, including lack of systematic processes in formulating guidelines, failure to state conflicts of interest, and lack of consultation with families of affected children. There was widespread agreement about a number of aspects, such as avoidance of the use of unnecessary diagnostic tests, risk factors for severe disease, indicators for hospital admission, discharge criteria, and nosocomial infection control. However, there was variability, even within areas of consensus, over specific recommendations, such as variable thresholds for oxygen therapy. Guidelines showed significant variability in recommendations for the pharmacological management of bronchiolitis, with conflicting recommendations over whether use of nebulized epinephrine, hypertonic saline, or bronchodilators should be routinely trialled. Conclusions Future guidelines should aim to be compliant with international standards for clinical guidelines to improve their quality and clarity and to promote their adoption into practice. Variable recommendations between guidelines may reflect the evolving evidence base for bronchiolitis management, and platforms should be created to understand this variability and promote evidence-based recommendations.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
    Location Call Number Limitation Availability
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  • 10
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 222, No. Supplement_7 ( 2020-10-07), p. S620-S627
    Abstract: Respiratory syncytial virus (RSV) is among the most important causes of acute lower respiratory tract infection (ALRI) in young children. We assessed the severity of RSV-ALRI in children less than 5 years old with bronchopulmonary dysplasia (BPD). Methods We searched for studies using EMBASE, Global Health, and MEDLINE. We assessed hospitalization risk, intensive care unit (ICU) admission, need for oxygen supplementation and mechanical ventilation, and in-hospital case fatality (hCFR) among children with BPD compared with those without (non-BPD). We compared the (1) length of hospital stay (LOS) and (2) duration of oxygen supplementation and mechanical ventilation between the groups. Results Twenty-nine studies fulfilled our inclusion criteria. The case definition for BPD varied substantially in the included studies. Risks were higher among children with BPD compared with non-BPD: RSV hospitalization (odds ratio [OR], 2.6; 95% confidence interval [CI] , 1.7–4.2; P & lt; .001), ICU admission (OR, 2.9; 95% CI, 2.3–3.5; P & lt; .001), need for oxygen supplementation (OR, 4.2; 95% CI, .5–33.7; P = .175) and mechanical ventilation (OR, 8.2; 95% CI, 7.6–8.9; P & lt; .001), and hCFR (OR, 12.8; 95% CI, 9.4–17.3; P & lt; .001). Median LOS (range) was 7.2 days (4–23) (BPD) compared with 2.5 days (1–30) (non-BPD). Median duration of oxygen supplementation (range) was 5.5 days (0–21) (BPD) compared with 2.0 days (0–26) (non-BPD). The duration of mechanical ventilation was more often longer ( & gt;6 days) in those with BPD compared with non-BPD (OR, 11.9; 95% CI, 1.4–100; P = .02). Conclusions The risk of severe RSV disease is considerably higher among children with BPD. There is an urgent need to establish standardized BPD case definitions, review the RSV prophylaxis guidelines, and encourage more specific studies on RSV infection in BPD patients, including vaccine development and RSV-specific treatment.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1473843-0
    Location Call Number Limitation Availability
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