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Clinical Presentation of Influenza in Children 6 to 35 Months of Age: Findings From a Randomized Clinical Trial of Inactivated Quadrivalent Influenza Vaccine

J. Danier, L. Rivera, C. Claeys, G. Dbaibo, VK. Jain, P. Kosalaraksa, W. Woo, E. Yanni, K. Zaman, B. Acosta, A. Amanullah, M. Ariza, M. Luisa Arroba Basanta, A. Bavdekar, A. Carmona, L. Cousin, A. Diaz, J. Diez-Domingo, E. Cagri Dinleyici, SN....

. 2019 ; 38 (8) : 866-872. [pub] -

Jazyk angličtina Země Spojené státy americké

Typ dokumentu klinické zkoušky, fáze III, časopisecké články, randomizované kontrolované studie

Perzistentní odkaz   https://www.medvik.cz/link/bmc20023799

BACKGROUND: In an exploratory analysis of an inactivated quadrivalent influenza vaccine (IIV4) trial in children 6-35 months without risk factors for influenza, we evaluated clinical presentation of influenza illness and vaccine impact on health outcomes. METHODS: This phase III trial was conducted in 13 geographically diverse countries across 5 influenza seasons (2011-2014). Children were randomized 1:1 to IIV4 or control. Active surveillance was performed for influenza-like episodes (ILE); influenza was confirmed by reverse transcription polymerase chain reaction (RT-PCR). The total vaccinated cohort was evaluated (N = 12,018). RESULTS: 5702 children experienced ≥1 ILE; 356 (IIV4 group) and 693 (control group) children had RT-PCR-confirmed influenza. Prevalence of ILE was similar in RT-PCR-positive and RT-PCR-negative cases regardless of vaccination. Breakthrough influenza illness was attenuated in children vaccinated with IIV4; moderate-to-severe illness was 41% less likely to be reported in the IIV4 group than the control group [crude odds ratio: 0.59 (95% confidence intervals: 0.44-0.77)]. Furthermore, fever >39°C was 46% less frequent following vaccination with IIV4 than with control [crude odds ratio: 0.54 (95% confidence intervals: 0.39-0.75)] in children with breakthrough illness. Health outcome analysis showed that, each year, IIV4 would prevent 54 influenza cases per 1000 children and 19 children would need to be vaccinated to prevent 1 new influenza case. CONCLUSIONS: In addition to preventing influenza in 50% of participants, IIV4 attenuated illness severity and disease burden in children who had a breakthrough influenza episode despite vaccination.

American University of Beirut Beirut Lebanon

Center for Excellence in Pediatric Infectious Diseases and Vaccines Chulalongkorn University Bangkok Thailand

Center of Postgraduate Medical Education Warsaw Poland

Centre for Community Medicine All India institute of Medical Sciences New Delhi India

Centro Médico Dominicano Santo Domingo Dominican Republic

Complutense University of Madrid Madrid Spain

Dr Castroviejo Primary Health Care Center Madrid Spain

EBA Centelles Barcelona Spain

Eskisehir Osmangazi University Eskisehir Turkey

FISABIO Public Health Valencia Spain

From the GSK Rockville Maryland

GSK Bangalore India

GSK King of Prussia Pennsylvania

GSK Wavre Belgium

Hospital Clínico Universitario de Santiago Santiago Spain

Hospital Infantil Universitario La Paz Madrid Spain

icddr b Dhaka Bangladesh

Instituto Hispalense de Pediatría Sevilla Spain

KEM Hospital Research Centre Pune India

Khon Kaen University Khon Kaen Thailand

Mary Chiles General Hospital Manila Philippines

Medicentrum 6 s r o Prague Czech Republic

National Autonomous University of Honduras Tegucigalpa Honduras

National Autonomous University of Santo Domingo Santo Domingo Dominican Republic

Nicolaus Copernicus University in Torun Collegium Medicum Bydgoszcz Poland

NIHR Manchester Clinical Research Facility Royal Manchester Children's Hospital Manchester United Kingdom

NIHR Southampton Clinical Research Facility and NIHR Southampton Biomedical Research Centre University of Southampton and University Hospital Southampton NHS Foundation Trust Southampton United Kingdom

Paediatric Institute Mares Riera Blanes Spain

Research Institute for Tropical Medicine Manila Philippines

St Hedwig of Silesia Hospital Trzebnica Poland

Tecnologia en Investigacion San Pedro Sula Honduras

Uludag University Bursa Turkey

University of Hradec Kralove Hradec Kralove Czech Republic

University of the Philippines Philippine General Hospital Manila Philippines

Citace poskytuje Crossref.org

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