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  1. Article ; Online: Evolution of respiratory syncytial virus burden in young children following the COVID-19 pandemic: influence of concomitant changes in testing practices.

    Fafi, Inès / Assad, Zein / Lenglart, Léa / Valtuille, Zaba / Ouldali, Naïm

    The Lancet. Infectious diseases

    2024  Volume 24, Issue 4, Page(s) e216–e217

    MeSH term(s) Child ; Humans ; Infant ; Child, Preschool ; Pandemics ; COVID-19 ; Respiratory Syncytial Virus, Human ; Respiratory Syncytial Virus Infections/diagnosis ; Respiratory Syncytial Virus Infections/epidemiology ; Respiratory Tract Infections
    Language English
    Publishing date 2024-02-15
    Publishing country United States
    Document type Letter
    ZDB-ID 2061641-7
    ISSN 1474-4457 ; 1473-3099
    ISSN (online) 1474-4457
    ISSN 1473-3099
    DOI 10.1016/S1473-3099(24)00081-1
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  2. Article ; Online: Common Seasonal Pathogens and Epidemiology of Henoch-Schönlein Purpura Among Children.

    Felix, Arthur / Assad, Zein / Bidet, Philippe / Caseris, Marion / Dumaine, Cécile / Faye, Albert / Melki, Isabelle / Kaguelidou, Florentia / Valtuille, Zaba / Ouldali, Naïm / Meinzer, Ulrich

    JAMA network open

    2024  Volume 7, Issue 4, Page(s) e245362

    Abstract: Importance: Henoch-Schönlein purpura (HSP) is the most common type of vasculitis in children. The factors that trigger the disease are poorly understood. Although several viruses and seasonal bacterial infections have been associated with HSP, ... ...

    Abstract Importance: Henoch-Schönlein purpura (HSP) is the most common type of vasculitis in children. The factors that trigger the disease are poorly understood. Although several viruses and seasonal bacterial infections have been associated with HSP, differentiating the specific associations of these pathogens with the onset of HSP remains a challenge due to their overlapping seasonal patterns.
    Objective: To analyze the role of seasonal pathogens in the epidemiology of HSP.
    Design, setting, and participants: This cohort study comprised an interrupted time-series analysis of patient records from a comprehensive national hospital-based surveillance system. Children younger than 18 years hospitalized for HSP in France between January 1, 2015, and March 31, 2023, were included.
    Exposure: Implementation and relaxation of nonpharmaceutical interventions (NPIs) for the COVID-19 pandemic, such as social distancing and mask wearing.
    Main outcomes and measures: The main outcomes were the monthly incidence of HSP per 100 000 children, analyzed via a quasi-Poisson regression model, and the estimated percentage of HSP incidence potentially associated with 14 selected common seasonal pathogens over the same period.
    Results: The study included 9790 children with HSP (median age, 5 years [IQR, 4-8 years]; 5538 boys [56.4%]) and 757 110 children with the infectious diseases included in the study (median age, 0.7 years [IQR, 0.2-2 years]; 393 697 boys [52.0%]). The incidence of HSP decreased significantly after implementation of NPIs in March 2020 (-53.6%; 95% CI, -66.6% to -40.6%; P < .001) and increased significantly after the relaxation of NPIs in April 2021 (37.2%; 95% CI, 28.0%-46.3%; P < .001). The percentage of HSP incidence potentially associated with Streptococcus pneumoniae was 37.3% (95% CI, 22.3%-52.3%; P < .001), the percentage of cases associated with Streptococcus pyogenes was 25.6% (95% CI, 16.7%-34.4%; P < .001), and the percentage of cases associated with human rhino enterovirus was 17.1% (95% CI, 3.8%-30.4%; P = .01). Three sensitivity analyses found similar results.
    Conclusions and relevance: This study found that significant changes in the incidence of HSP simultaneously with major shifts in circulating pathogens after NPIs for the COVID-19 pandemic indicated that approximately 60% of HSP incidence was potentially associated with pneumococcus and group A streptococcus. This finding suggests that preventive measures against these pathogens could reduce the incidence of pediatric HSP.
    MeSH term(s) Male ; Child ; Humans ; Child, Preschool ; Infant ; Seasons ; IgA Vasculitis/epidemiology ; IgA Vasculitis/complications ; Cohort Studies ; Pandemics ; COVID-19/epidemiology ; COVID-19/complications
    Language English
    Publishing date 2024-04-01
    Publishing country United States
    Document type Journal Article
    ISSN 2574-3805
    ISSN (online) 2574-3805
    DOI 10.1001/jamanetworkopen.2024.5362
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  3. Article ; Online: Psychotropic Medication Prescribing for Children and Adolescents After the Onset of the COVID-19 Pandemic.

    Valtuille, Zaba / Acquaviva, Eric / Trebossen, Vincent / Ouldali, Naim / Bourmaud, Aurelie / Sclison, Stéphane / Gomez, Alexandre / Revet, Alexis / Peyre, Hugo / Delorme, Richard / Kaguelidou, Florentia

    JAMA network open

    2024  Volume 7, Issue 4, Page(s) e247965

    Abstract: Importance: Numerous studies have provided evidence for the negative associations of the COVID-19 pandemic with mental health, but data on the use of psychotropic medication in children and adolescents after the onset of the COVID-19 pandemic are ... ...

    Abstract Importance: Numerous studies have provided evidence for the negative associations of the COVID-19 pandemic with mental health, but data on the use of psychotropic medication in children and adolescents after the onset of the COVID-19 pandemic are lacking.
    Objective: To assess the rates and trends of psychotropic medication prescribing before and over the 2 years after the onset of the COVID-19 pandemic in children and adolescents in France.
    Design, setting, and participants: This cross-sectional study used nationwide interrupted time-series analysis of outpatient drug dispensing data from the IQVIA X-ponent database. All 8 839 143 psychotropic medication prescriptions dispensed to children (6 to 11 years of age) and adolescents (12 to 17 years of age) between January 2016 and May 2022 in France were retrieved and analyzed.
    Exposure: Onset of COVID-19 pandemic.
    Main outcomes and measures: Monthly rates of psychotropic medication prescriptions per 1000 children and adolescents were analyzed using a quasi-Poisson regression before and after the pandemic onset (March 2020), and percentage changes in rates and trends were assessed. After the pandemic onset, rate ratios (RRs) were calculated between estimated and expected monthly prescription rates. Analyses were stratified by psychotropic medication class (antipsychotic, anxiolytic, hypnotic and sedative, antidepressant, and psychostimulant) and age group (children, adolescents).
    Results: In total, 8 839 143 psychotropic medication prescriptions were analyzed, 5 884 819 [66.6%] for adolescents and 2 954 324 [33.4%] for children. In January 2016, the estimated rate of monthly psychotropic medication prescriptions was 9.9 per 1000 children and adolescents, with the prepandemic rate increasing by 0.4% per month (95% CI, 0.3%-0.4%). In March 2020, the monthly prescription rate dropped by 11.5% (95% CI, -17.7% to -4.9%). During the 2 years following the pandemic onset, the trend changed significantly, and the prescription rate increased by 1.3% per month (95% CI, 1.2%-1.5%), reaching 16.1 per 1000 children and adolescents in May 2022. Monthly rates of psychotropic medication prescriptions exceeded the expected rates by 11% (RR, 1.11 [95% CI, 1.08-1.14]). Increases in prescribing trends were observed for all psychotropic medication classes after the pandemic onset but were substantial for anxiolytics, hypnotics and sedatives, and antidepressants. Prescription rates rose above those expected for all psychotropic medication classes except psychostimulants (RR, 1.12 [95% CI, 1.09-1.15] in adolescents and 1.06 [95% CI, 1.05-1.07] in children for antipsychotics; RR, 1.30 [95% CI, 1.25-1.35] in adolescents and 1.11 [95% CI, 1.09-1.12] in children for anxiolytics; RR, 2.50 [95% CI, 2.23-2.77] in adolescents and 1.40 [95% CI, 1.30-1.50] in children for hypnotics and sedatives; RR, 1.38 [95% CI, 1.29-1.47] in adolescents and 1.23 [95% CI, 1.20-1.25] in children for antidepressants; and RR, 0.97 [95% CI, 0.95-0.98] in adolescents and 1.02 [95% CI, 1.00-1.04] in children for psychostimulants). Changes were more pronounced among adolescents than children.
    Conclusions and relevance: These findings suggest that prescribing of psychotropic medications for children and adolescents in France significantly and persistently increased after the COVID-19 pandemic onset. Future research should identify underlying determinants to improve psychological trajectories in young people.
    MeSH term(s) Humans ; Child ; Adolescent ; COVID-19/epidemiology ; Psychotropic Drugs/therapeutic use ; Male ; Female ; Cross-Sectional Studies ; Pandemics ; France/epidemiology ; SARS-CoV-2 ; Drug Prescriptions/statistics & numerical data ; Practice Patterns, Physicians'/statistics & numerical data ; Practice Patterns, Physicians'/trends ; Interrupted Time Series Analysis ; Pneumonia, Viral/drug therapy ; Pneumonia, Viral/epidemiology ; Coronavirus Infections/drug therapy ; Coronavirus Infections/epidemiology ; Betacoronavirus ; Anti-Anxiety Agents/therapeutic use ; Mental Disorders/drug therapy ; Mental Disorders/epidemiology
    Chemical Substances Psychotropic Drugs ; Anti-Anxiety Agents
    Language English
    Publishing date 2024-04-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2574-3805
    ISSN (online) 2574-3805
    DOI 10.1001/jamanetworkopen.2024.7965
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  4. Article ; Online: Weight Gain During Antipsychotic Treatment in Children, Adolescents, and Adults: A Disproportionality Analysis in the Global Pharmacovigilance Database, Vigibase

    Kaguelidou, Florentia / Valtuille, Zaba / Durrieu, Geneviève / Delorme, Richard / Peyre, Hugo / Treluyer, Jean-Marc / Montastruc, François / Chouchana, Laurent

    Drug safety

    2022  Volume 46, Issue 1, Page(s) 77–85

    Abstract: Introduction: While antipsychotic-induced weight gain has been widely described in adults, it has yet to be better characterized in children and adolescents.: Objective: The aim of this study was to assess antipsychotic-induced weight-gain reporting ... ...

    Abstract Introduction: While antipsychotic-induced weight gain has been widely described in adults, it has yet to be better characterized in children and adolescents.
    Objective: The aim of this study was to assess antipsychotic-induced weight-gain reporting in children and adolescents as compared to adults, and according to the type of antipsychotic.
    Methods: The study is an observational, case-non-case study using individual case safety reports from the WHO global pharmacovigilance database VigiBase
    Results: Among 282,224 antipsychotic-related spontaneous reports included in this analysis, we identified 16,881 (6.0%) weight-gain cases. Disproportionality in weight-gain reporting was found in children (adjusted ROR (aROR) 3.6; 95% CI 3.3-3.8) and in adolescents (aROR 2.3; 95% CI 2.2-2.4) compared to adults. Use of risperidone was associated with the highest increase in weight-gain reporting in children (aROR 4.9; 95% CI 3.9-6.1) and adolescents (aROR 3.6; 95% CI 3.1-4.1).
    Conclusions: Compared to adults, weight-gain reporting with antipsychotics was disproportionally higher in the pediatric population, especially in children under 12 years of age. Considering the impact of weight gain on global morbidity and mortality, physicians should closely monitor weight gain in young patients, especially children on risperidone.
    MeSH term(s) Adolescent ; Adult ; Child ; Humans ; Adverse Drug Reaction Reporting Systems ; Antipsychotic Agents/adverse effects ; Pharmacovigilance ; Risperidone/adverse effects ; Weight Gain
    Chemical Substances Antipsychotic Agents ; Risperidone (L6UH7ZF8HC)
    Language English
    Publishing date 2022-12-02
    Publishing country New Zealand
    Document type Journal Article ; Observational Study
    ZDB-ID 1018059-x
    ISSN 1179-1942 ; 0114-5916
    ISSN (online) 1179-1942
    ISSN 0114-5916
    DOI 10.1007/s40264-022-01252-6
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  5. Article ; Online: Calculating the fraction of Kawasaki disease potentially attributable to seasonal pathogens: a time series analysis.

    Valtuille, Zaba / Lefevre-Utile, Alain / Ouldali, Naim / Beyler, Constance / Boizeau, Priscilla / Dumaine, Cécile / Felix, Arthur / Assad, Zein / Faye, Albert / Melki, Isabelle / Kaguelidou, Florentia / Meinzer, Ulrich

    EClinicalMedicine

    2023  Volume 61, Page(s) 102078

    Abstract: Background: Kawasaki disease is an acute, febrile, systemic vasculitis of children that primarily affects medium-sized blood vessels with a tropism for the coronary arteries. Although the etiological factors remain unknown, infections have been ... ...

    Abstract Background: Kawasaki disease is an acute, febrile, systemic vasculitis of children that primarily affects medium-sized blood vessels with a tropism for the coronary arteries. Although the etiological factors remain unknown, infections have been suggested as the trigger of Kawasaki disease. We sought to calculate the fraction of Kawasaki disease potentially attributable to seasonal infections.
    Methods: This cohort study used a population-based time series analysis from the French hospitalisation database (Programme de Médicalisation des Systèmes d'Information), which includes all inpatients admitted to any public or private hospital in France. We included all children aged 0-17 years hospitalised for Kawasaki disease in France over 13 years. The monthly incidence of Kawasaki disease per 10,000 children over time was analysed by a quasi-Poisson regression model. The model accounted for seasonality by using harmonic terms (a pair of sines and cosines with 12-month periods). The circulation of eight common seasonal pathogens (adenovirus, influenza, metapneumovirus,
    Findings: Between Jan 1, 2007, and Dec 31, 2019, we included 10,337 children with Kawasaki disease and 442,762 children with the selected infectious diseases. In the Kawasaki disease cohort, the median age [IQR] was 2 [0-4] years, 6164 [59.6%] were boys. Adenovirus infection was potentially responsible for 24.4% [21.5-27.8] (p < 0.001) of Kawasaki diseases, Norovirus for 6.7% [1.3-11.2] (p = 0.002), and RSV 4.6% [1.2-7.8] (p = 0.022). Sensitivity analyses found similar results.
    Interpretation: This cohort study of data from a comprehensive national hospitalisation database indicated that approximately 35% of Kawasaki diseases was potentially attributable to seasonal infections.
    Funding: None.
    Language English
    Publishing date 2023-07-06
    Publishing country England
    Document type Journal Article
    ISSN 2589-5370
    ISSN (online) 2589-5370
    DOI 10.1016/j.eclinm.2023.102078
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  6. Article ; Online: Age-Specific Resurgence in Invasive Pneumococcal Disease Incidence in the COVID-19 Pandemic Era and Its Association With Respiratory Virus and Pneumococcal Carriage Dynamics: A Time-Series Analysis.

    Rybak, Alexis / Assad, Zein / Levy, Corinne / Bonarcorsi, Stéphane / Béchet, Stéphane / Werner, Andreas / Wollner, Alain / Valtuille, Zaba / Kaguelidou, Florentia / Angoulvant, François / Cohen, Robert / Varon, Emmanuelle / Ouldali, Naïm

    Clinical infectious diseases : an official publication of the Infectious Diseases Society of America

    2023  Volume 78, Issue 4, Page(s) 855–859

    Abstract: Using multiple national surveillance systems, we found an increase in the incidence of invasive pneumococcal disease during after the relaxation of non-pharmaceutical interventions against COVID-19, which strongly varied by age. Age groups with higher ... ...

    Abstract Using multiple national surveillance systems, we found an increase in the incidence of invasive pneumococcal disease during after the relaxation of non-pharmaceutical interventions against COVID-19, which strongly varied by age. Age groups with higher incidence of respiratory syncytial virus and influenza also experienced higher increase in invasive pneumococcal disease incidence, with no change in pneumococcal carriage.
    MeSH term(s) Humans ; Infant ; Incidence ; Pandemics ; COVID-19/epidemiology ; Streptococcus pneumoniae ; Pneumococcal Infections/epidemiology ; Pneumococcal Infections/prevention & control ; Respiratory Syncytial Virus, Human ; Age Factors ; Pneumococcal Vaccines
    Chemical Substances Pneumococcal Vaccines
    Language English
    Publishing date 2023-12-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1099781-7
    ISSN 1537-6591 ; 1058-4838
    ISSN (online) 1537-6591
    ISSN 1058-4838
    DOI 10.1093/cid/ciad746
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  7. Article ; Online: Increased Incidence of Pediatric Uveitis Associated with the COVID-19 Pandemic Occurring Before COVID-19 Vaccine Implementation: A Time-Series Analysis.

    Lafay, Céline / Assad, Zein / Ouldali, Naïm / Quoc, Emmanuel Bui / Clement, Ana / Durand, Capucine / Fares, Selim / Faye, Albert / Eveillard, Laurye-Anne / Kaguelidou, Florentia / Titah, Cherif / Valtuille, Zaba / Vinit, Caroline / Meinzer, Ulrich / Dumaine, Cécile

    The Journal of pediatrics

    2023  Volume 263, Page(s) 113682

    Abstract: Objective: To examine whether the COVID-19 pandemic was associated with an increased incidence of uveitis in children.: Study design: We performed a time-series analysis of patient records from a national, hospital-based, French surveillance system. ... ...

    Abstract Objective: To examine whether the COVID-19 pandemic was associated with an increased incidence of uveitis in children.
    Study design: We performed a time-series analysis of patient records from a national, hospital-based, French surveillance system. All children hospitalized for uveitis in France between January 2012 and March 2022 were included. The incidence of newly diagnosed uveitis per 100 000 children per trimester in France was analyzed by a quasi-Poisson regression. A cohort of children diagnosed with uveitis at Robert-Debré Hospital was used to compare the characteristics of uveitis after and before the onset of the pandemic.
    Results: During the study period, 2492 children were hospitalized for uveitis in France. The COVID-19 pandemic, which started in March 2020, was associated with a significant increase in the occurrence of uveitis (estimated cumulative change, 44.9%; 95% CI 11.4-78.4; P < .001). The increase in the incidence of pediatric uveitis started in October 2020, while the national immunization program targeting children aged less than 18 years began in June 2021. This increase involved all forms of uveitis, regardless of location, and clincial characteristics were similar to those diagnosed before the pandemic.
    Conclusions: Our study evidenced a significant increase in the incidence of pediatric uveitis following the COVID-19 pandemic. This increase occurred 6 months before the implementation of the national COVID-19 vaccination program for children, suggesting that the resurgence of this rare disease is independent of COVID-19 vaccination.
    MeSH term(s) Child ; Humans ; COVID-19 Vaccines ; COVID-19/epidemiology ; COVID-19/prevention & control ; Pandemics ; Incidence ; Uveitis/epidemiology ; Uveitis/etiology
    Chemical Substances COVID-19 Vaccines
    Language English
    Publishing date 2023-08-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3102-1
    ISSN 1097-6833 ; 0022-3476
    ISSN (online) 1097-6833
    ISSN 0022-3476
    DOI 10.1016/j.jpeds.2023.113682
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  8. Article ; Online: Unique Changes in the Incidence of Acute Chest Syndrome in Children With Sickle Cell Disease Unravel the Role of Respiratory Pathogens: A Time Series Analysis.

    Assad, Zein / Valtuille, Zaba / Rybak, Alexis / Kaguelidou, Florentia / Lazzati, Andrea / Varon, Emmanuelle / Pham, Luu-Ly / Lenglart, Léa / Faye, Albert / Caseris, Marion / Cohen, Robert / Levy, Corinne / Vabret, Astrid / Gravey, François / Angoulvant, François / Koehl, Bérengère / Ouldali, Naïm

    Chest

    2023  Volume 165, Issue 1, Page(s) 150–160

    Abstract: Background: Acute chest syndrome (ACS) is a life-threatening complication of sickle cell disease (SCD). Although respiratory pathogens are frequently detected in children with ACS, their respective role in triggering the disease is still unclear. We ... ...

    Abstract Background: Acute chest syndrome (ACS) is a life-threatening complication of sickle cell disease (SCD). Although respiratory pathogens are frequently detected in children with ACS, their respective role in triggering the disease is still unclear. We hypothesized that the incidence of ACS followed the unprecedented population-level changes in respiratory pathogen dynamics after COVID-19-related nonpharmaceutical interventions (NPIs).
    Research question: What is the respective role of respiratory pathogens in ACS epidemiology?
    Study design and methods: This study was an interrupted time series analysis of patient records from a national hospital-based surveillance system. All children aged < 18 years with SCD hospitalized for ACS in France between January 2015 and May 2022 were included. The monthly incidence of ACS per 1,000 children with SCD over time was analyzed by using a quasi-Poisson regression model. The circulation of 12 respiratory pathogens in the general pediatric population over the same period was included in the model to assess the fraction of ACS potentially attributable to each respiratory pathogen.
    Results: Among the 55,941 hospitalizations of children with SCD, 2,306 episodes of ACS were included (median [interquartile range] age, 9 [5-13] years). A significant decrease was observed in ACS incidence after NPI implementation in March 2020 (-29.5%; 95% CI, -46.8 to -12.2; P = .001) and a significant increase after lifting of the NPIs in April 2021 (24.4%; 95% CI, 7.2 to 41.6; P = .007). Using population-level incidence of several respiratory pathogens, Streptococcus pneumoniae accounted for 30.9% (95% CI, 4.9 to 56.9; P = .02) of ACS incidence over the study period and influenza 6.8% (95% CI, 2.3 to 11.3; P = .004); other respiratory pathogens had only a minor role.
    Interpretation: NPIs were associated with significant changes in ACS incidence concomitantly with major changes in the circulation of several respiratory pathogens in the general population. This unique epidemiologic situation allowed determination of the contribution of these respiratory pathogens, in particular S pneumoniae and influenza, to the burden of childhood ACS, highlighting the potential benefit of vaccine prevention in this vulnerable population.
    MeSH term(s) Child ; Humans ; Child, Preschool ; Adolescent ; Acute Chest Syndrome/etiology ; Acute Chest Syndrome/complications ; Incidence ; Influenza, Human/complications ; Time Factors ; Anemia, Sickle Cell/complications ; Anemia, Sickle Cell/epidemiology
    Language English
    Publishing date 2023-08-05
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1032552-9
    ISSN 1931-3543 ; 0012-3692
    ISSN (online) 1931-3543
    ISSN 0012-3692
    DOI 10.1016/j.chest.2023.07.4219
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  9. Article ; Online: Incidence of Acute Chest Syndrome in Children With Sickle Cell Disease Following Implementation of the 13-Valent Pneumococcal Conjugate Vaccine in France.

    Assad, Zein / Michel, Morgane / Valtuille, Zaba / Lazzati, Andrea / Boizeau, Priscilla / Madhi, Fouad / Gaschignard, Jean / Pham, Luu-Ly / Caseris, Marion / Cohen, Robert / Kaguelidou, Florentia / Varon, Emmanuelle / Alberti, Corinne / Faye, Albert / Angoulvant, François / Koehl, Bérengère / Ouldali, Naïm

    JAMA network open

    2022  Volume 5, Issue 8, Page(s) e2225141

    Abstract: Importance: Acute chest syndrome (ACS) is one of the leading acute severe complications of sickle-cell disease (SCD). Although Streptococcus pneumoniae (S pneumoniae) is highly prevalent in children with SCD, its precise role in ACS is unclear. The ... ...

    Abstract Importance: Acute chest syndrome (ACS) is one of the leading acute severe complications of sickle-cell disease (SCD). Although Streptococcus pneumoniae (S pneumoniae) is highly prevalent in children with SCD, its precise role in ACS is unclear. The efficacy of 13-valent pneumococcal conjugate vaccine (PCV13) implementation on ACS is still unknown.
    Objective: To assess the association of PCV13 implementation in the general pediatric population with the incidence of ACS in children with SCD.
    Design, setting, and participants: This cohort study used an interrupted time-series analysis of patient records from a national hospital-based French surveillance system. All children younger than 18 years with SCD (based on the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision definition) hospitalized in France between January 2007 and December 2019 were included.
    Exposures: PCV13 implementation.
    Main outcomes and measures: Monthly incidence of ACS per 1000 children with SCD over time as analyzed by segmented linear regression with autoregressive error; monthly incidence of hospitalization for vaso-occlusive crisis, asthma crisis, and acute pyelonephritis per 1000 children with SCD over the same period as the control outcomes.
    Results: Among the 107 694 hospitalizations of children with SCD, 4007 episodes of ACS were included (median [IQR] age, 8 [4-12] years; 2228 [55.6%] boys). PCV13 implementation in 2010 was followed by a significant decrease in the incidence of ACS (-0.9% per month; 95% CI, -1.4% to -0.4%; P < .001), with an estimated cumulative change of -41.8% (95% CI, -70.8% to -12.7%) by 2019. Sensitivity analyses yielded the same results, including the incidence of ACS adjusted for that of vaso-occlusive crisis over time. The results were similar among different age groups. By contrast, no change was found for the 3 control outcomes over the study period.
    Conclusions and relevance: PCV13 implementation was associated with an important reduction in the incidence of ACS in children with SCD. This vaccine benefit provides new evidence of the key role of S pneumoniae in ACS and should be considered when estimating outcomes associated with current PCVs and the potential benefit of next-generation PCVs in children.
    MeSH term(s) Acute Chest Syndrome/complications ; Acute Chest Syndrome/epidemiology ; Anemia, Sickle Cell/complications ; Anemia, Sickle Cell/epidemiology ; Child ; Child, Preschool ; Cohort Studies ; Female ; Humans ; Incidence ; Male ; Streptococcus pneumoniae ; Vaccines, Conjugate
    Chemical Substances Vaccines, Conjugate
    Language English
    Publishing date 2022-08-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2574-3805
    ISSN (online) 2574-3805
    DOI 10.1001/jamanetworkopen.2022.25141
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