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Effectiveness of nirsevimab introduction against respiratory syncytial virus in the Valencian Community: A preliminary assessment

Vaccine, ISSN: 0264-410X, Vol: 42, Issue: 22, Page: 126030
2024
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Metric Options:   Counts1 Year3 Year

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Revolutionising RSV infection prevention and control: unveiling new options in the fight against RSV

Respiratory syncytial virus (RSV) is a leading cause of respiratory illness across all age groups, causing significant morbidity and mortality in infants and older individuals

Article Description

Respiratory syncytial virus (RSV) represents a high burden of disease in children and the primary cause of hospitalization, especially in children under 1 year old. In the Valencian Community (Spain), nirsevimab, a long-acting monoclonal antibody, was introduced for the RSV 2023–2024 season as a universal pre-exposure prophylaxis for high-risk children and those under 6 months old. This study examines its impact, coverage, and effectiveness. The campaign achieved 88.5 % coverage and 73.7 % of effectiveness. Analysis of over 27,000 susceptible children (over 24,000 immunized), showed that those immunized exhibited a threefold reduction in RSV incidence compared to non-immunized ones. To prevent one case, the number needed to immunize (NNI) was 63. Hospitalizations due to acute respiratory infections were almost two times lower in immunized children compared to non-immunized ones (0.9 % vs 1.6 %, respectively). These first results showcase the preliminary positive impact of this public health intervention.

Bibliographic Details

Estrella-Porter, Pablo; Blanco-Calvo, Carolina; Lameiras-Azevedo, Ana Sofia; Juaneda, Juan; Fernández-Martínez, Sergio; Gómez-Pajares, Fernando; Tempelsman, Rocío; Roig-Sena, Francisco Javier; Pérez-Panades, Jordi; Botella-Rocamora, Paloma; Lluch-Rodrigo, Jose Antonio; Pastor-Villalba, Eliseo

Elsevier BV

Biochemistry, Genetics and Molecular Biology; Immunology and Microbiology; Veterinary; Medicine

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