RESUMO
INTRODUCCIÓN: El objetivo fue estimar la efectividad de la vacuna (EV) trivalente inactivada para prevenir atenciones hospitalarias por gripe (AHG) en Guadalajara, Castilla-La Mancha (CLM), España, temporada 2018-2019. MATERIAL Y MÉTODOS: Estudio de cohortes retrospectivo; semanas 40/2018 a 13/2019. Fuentes: Programa Microbiología; historia clínica electrónica; censo poblacional (INE, 1/7/2018). Casos: AHG (urgencias y/u observación de urgencias o ingreso), confirmadas mediante prueba antigénica o PCR. Se calcularon: fracciones preventivas ([FPv(vacunados) y FPp(poblacional)]) y número necesario de pacientes a vacunar (NNV). RESULTADOS: Hubo 228 AHG (tasa incidencia [TI] acumulada=8,9/104; ≥ 65 años=65%; cobertura vacunal=13% [≥ 65 años=58%]; mortalidad=9%); con máxima incidencia en la semana 6.ª (TI=1,7/104) (en CLM, en la 4.ª). El mayor pico de VRS ocurrió en la 3.ª semana (en CLM, en la 52). La FPv entre 14-65 años fue del 96% (FPp=58%) y en ≥ 65, del 32% (FPp=21%). NNV=414. Como en España, predominó el virus A, siendo A(H3N2) un 13% más prevalente (cepa no concordante con la vacunal). CONCLUSIONES: La temporada se retrasó por una sostenida circulación del VRS. La EV resultó inferior a la nacional. Sería imprescindible impulsar próximas campañas para mejorar la cobertura
INTRODUCTION: The objective was to estimate the effectiveness of inactivated trivalent vaccine (VE) in preventing hospital flu care (HFC) in Guadalajara, Castile-La Mancha (CLM), Spain, 2018-19 season. MATERIAL AND METHODS: Retrospective cohort study (40/2018 to 13/2019 weeks). Sources: Microbiology programme; electronic medical history; population census (INE, 1/7/2018). Cases: Population requiring HFC (hospital emergencies and/or emergency observation unit and/or hospital admissions), confirmed by antigenic test and/or PCR. Preventive fractions [PFv(vaccinated) and PFp(population)] and Necessary number of patients to be vaccinated (NNV) were calculated. RESULTS: 228 HFT occurred [cumulative incidence rate (IR)=8.9/104; ≥65 years=65%; vaccination coverage=13% (≥65 years=58%); mortality=9%); maximum incidence in the 6th week (IR=1.7/104) (in CLM, in 4th)]. Highest peak of RSV occurred in the 3rd (in CLM, in the 52th). PFv (14-65 years) was 96% (PFp=58%) and in ≥65, 32% (PFp=21%). NNV=414. As in Spain, influenza virus A predominated, with A(H3N2) being 13% more prevalent (strain not included in the vaccine). CONCLUSIONS: The season was delayed by sustained VRS circulation. The VE was lower than the national one. It is be essential to promote future campaigns to improve vaccination coverage
Assuntos
Humanos , Masculino , Feminino , Recém-Nascido , Lactente , Pré-Escolar , Criança , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Influenza Humana/imunologia , Influenza Humana/prevenção & controle , Resultado do Tratamento , Assistência Hospitalar/organização & administração , Necessidades e Demandas de Serviços de Saúde , Vacinas contra Influenza , Estudos de Coortes , Cobertura Vacinal , Espanha , Estudos Retrospectivos , Vírus Sincicial Respiratório Humano/imunologia , Infecções por Vírus Respiratório Sincicial/epidemiologiaRESUMO
INTRODUCTION: The objective was to estimate the effectiveness of inactivated trivalent vaccine (VE) in preventing hospital flu care (HFC) in Guadalajara, Castile-La Mancha (CLM), Spain, 2018-19 season. MATERIAL AND METHODS: Retrospective cohort study (40/2018 to 13/2019 weeks). SOURCES: Microbiology programme; electronic medical history; population census (INE, 1/7/2018). CASES: Population requiring HFC (hospital emergencies and/or emergency observation unit and/or hospital admissions), confirmed by antigenic test and/or PCR. Preventive fractions [PFv(vaccinated) and PFp(population)] and Necessary number of patients to be vaccinated (NNV) were calculated. RESULTS: 228 HFT occurred [cumulative incidence rate (IR)=8.9/104; ≥65 years=65%; vaccination coverage=13% (≥65 years=58%); mortality=9%); maximum incidence in the 6th week (IR=1.7/104) (in CLM, in 4th)]. Highest peak of RSV occurred in the 3rd (in CLM, in the 52th). PFv (14-65 years) was 96% (PFp=58%) and in ≥65, 32% (PFp=21%). NNV=414. As in Spain, influenza virus A predominated, with A(H3N2) being 13% more prevalent (strain not included in the vaccine). CONCLUSIONS: The season was delayed by sustained VRS circulation. The VE was lower than the national one. It is be essential to promote future campaigns to improve vaccination coverage.