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Association between vaccination coverage decline and influenza incidence rise among Italian elderly

After a peak of 68.3% during the 2005–06 season, influenza vaccine coverage among Italian elderly showed an unprecedented, prolonged decline. According to the National surveillance network, the vaccination coverage was ≤50% during two of the last three seasons (2014–17). In parallel, influenza-like...

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Detalles Bibliográficos
Autores principales: Manzoli, Lamberto, Gabutti, Giovanni, Siliquini, Roberta, Flacco, Maria Elena, Villari, Paolo, Ricciardi, Walter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6051463/
https://www.ncbi.nlm.nih.gov/pubmed/29590341
http://dx.doi.org/10.1093/eurpub/cky053
Descripción
Sumario:After a peak of 68.3% during the 2005–06 season, influenza vaccine coverage among Italian elderly showed an unprecedented, prolonged decline. According to the National surveillance network, the vaccination coverage was ≤50% during two of the last three seasons (2014–17). In parallel, influenza-like illness (ILI) rates increased from 2.71% in the triennium 2005–08, to 4.24% in the last triennium. A significant association was found between ILI rise and vaccine coverage decline (P = 0.036), and according to a conservative estimation, each 1% increase in coverage may prevent ≥2690 ILI cases among the elderly. A reinforcement of influenza immunization policies is strongly needed in Italy.