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Children aged 11 to <24 months received 2 intranasal doses of live attenuated influenza vaccine (LAIV) or placebo, 35+/-7 days apart. Dose 1 was administered concomitantly with a combined measles, mumps, and rubella vaccine (Priorix). Seroresponses to measles and mumps were similar between groups. Compared with placebo, response rates to rubella in LAIV+Priorix recipients were statistically lower at a 15 IU/mL threshold (83.9% vs 78.0%) and the prespecified noninferiority criteria were not met. In a post hoc analysis using an alternate widely accepted threshold of 10 IU/mL, the noninferiority criteria were met (93.4% vs 89.8%). Concomitant administration with Priorix did not affect the overall influenza protection rate of LAIV (78.4% and 63.8% against antigenically similar influenza strains and any strain, respectively).
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http://dx.doi.org/10.1016/j.vaccine.2009.11.054 | DOI Listing |
Influenza Other Respir Viruses
September 2025
Public Health Agency, Belfast, UK.
Background: We evaluated the effectiveness of the influenza vaccine programme against infection among emergency hospital admissions with respiratory conditions in Northern Ireland during the 2023/2024 influenza season.
Methods: Using a test-negative design, we compared the odds of vaccination between patients who tested positive (cases) and negative (controls) for laboratory-confirmed influenza, adjusting for confounders. VE was stratified by age group, sex and time since vaccination.
J Infect Chemother
September 2025
Department of Pediatrics, Saku Central Hospital Advanced Care Center, Nagano, Japan.
Background: Influenza remains a major public health issue, leading to millions of severe cases and many deaths annually. Although educational and childcare institutions are key transmission points for the spread of the virus in communities, few studies have comprehensively examined the vaccination rates and their determinants in these settings.
Methods: We conducted a nationwide web-based survey to assess influenza knowledge, perceptions, and determinants of vaccine hesitancy based on the 5C model among childcare and educational professionals in Japan.
J Control Release
September 2025
Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA; Bioinnovations in Brain Cancer, Biointerfaces Institute; The Developmental Therapeutics Program, Rogel Cancer Center; Center for RNA Biomedicine, University of Michigan, Ann Arbor, MI 48109,
Lipid nanoparticles (LNPs) have played an instrumental role in the delivery of RNA therapeutics and vaccines, including the emerging class of synthetic circular RNA (circRNA). Pulmonary vaccines hold the potential to prevent various respiratory infectious diseases, such as influenza caused by influenza infection. Here, we report the pulmonary delivery of LNPs loaded with highly stable small circRNA vaccine for influenza prevention.
View Article and Find Full Text PDFVaccine
September 2025
Institute of General Practice and Family Medicine, LMU University Hospital, LMU, Munich, Germany; German Center of Mental Health, Augsburg, Munich, Germany.
Background: Chronically ill are advised to receive annual vaccinations against Covid-19 and seasonal influenza. Furthermore, chronically ill show an increased prevalence of comorbid common mental disorders (CMDs), like depression, anxiety, and somatoform disorders. With vaccination rates remaining insufficient among these vulnerable patients, prior research assumes an association between CMDs and vaccination readiness.
View Article and Find Full Text PDFVaccine
September 2025
Department of Epidemiology, Institute of Social Medicine, University of State of the Rio de Janeiro. 524 São Francisco Xavier St. Maracanã, Bloco E, 7th Floor, Rio de Janeiro - RJ, Cep 20550-013, Brazil. Electronic address:
Background: There is limited data on adult opinions toward school-based vaccination programs, which can supplement clinic-based strategies in the Brazilian public health system. Since 2016, vaccination rates among Brazilian children and adolescents have shown worrisome declines, remaining well below full coverage, including for more recently introduced COVID-19 vaccines. School vaccination programs are not commonly implemented or monitored in Brazil.
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