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[Estimates of Target Population for Pneumococcal Vaccination in People over 50 years in Catalonia and Spain].

Angel, Vila-Córcoles; Olga, Ochoa-Gondar; Eva, Satué; Cinta, de Diego; Marc, Vila-Rovira; Manel, Jariod;

[Estimates of Target Population for Pneumococcal Vaccination in People over 50 years in Catalonia and Spain].

Abstract

Published data about prevalence of distinct risk condictions for pneumococcal disease is scarce. This study investigated the prevalence of distinct risk conditions for pneumococal disease in Catalonian adults and stimated the potential size of target population for pneumococcal vaccination in Catalonia and Spain.Cross-sectional population-based study that included 2,033,465 individuals older than 49 years-old assigned to the Catalonian Health Institute (Catalonia, Spain) at 01/01/2015. The Catalonian Health Institute Information System for the Development of Research in Primary Care (SIDIAP) was used to identify comorbidities and/or underlying conditions in each subject and establish potential target population for pneumococcal vaccination on the basis of their risk for suffering pneumococcal infections: 1) immunocompromised subjects; 2) immunocompetents subjects with any risk condition; 3) immunocompetents subjects without risk conditions.Of the 2,033,465 study subjects, 1,053,155 (51.8%) had no risk conditions, 649,014 (31.9%) had one risk condition and 331,296 (16.3%) had multiple risk conditions (11.4% in 50-64 years vs 21.2% in people older than 65 years, p smaller than 0.001; 21.8% in men vs 11.6% in women, p smaller than 0.001). Overall, 176,600 (8.7%) and 803,710 (39.5%) were classified in risk stratum 1 and 2, respectively. According to distinct risk strata considered, the target population for pneumococcal vaccination varied between 0.2-1.9 million in Catalonia and 1.5-2.3 million in Spain.In our setting, almost fifty percent of people ≥50 years have at least one risk condition to suffert pneumococcal disease. Adult population susceptible for pneumococal vaccination largely varies depending on the risk stratum considered as targeted people for pneumococcal vaccination.La información publicada sobre la prevalencia de los distintos factores o condiciones de riesgo para padecer enfermedad neumocócica es escasa. El objetivo de la investigación fue describir en Cataluña la prevalencia de factores de riesgo de padecer enfermedad neumocócica en personas de 50 años o más y estimar el tamaño teórico de la población diana necesario para incluir la vacunación antineumocócica en Cataluña y España.Estudio transversal que incluyó a 2.033.465 personas de 50 años y más asignadas al Institut Català de la Salut a 01/01/2015. Se utilizó el Sistema de Información para el Desarrollo de la Investigación en Atención Primaria de Cataluña (SIDIAP) para identificar las comorbilidades o condiciones de riesgo en cada sujeto y establecer su clasificación en la población potencialmente susceptible de ser vacunada en base a su riesgo de sufrir enfermedad neumocócica: 1) inmunocomprometidos; 2) inmunocompetentes con alguna condición de riesgo; 3) inmunocompetentes sin condiciones de riesgo.De las 2.033.465 personas estudiadas, 1.053.155 (51,8%) no tenían ninguna condición de riesgo, 649.014 (31,9%) tenían una y 331.296 (16,3%) tenían múltiples (11,4% en 50-64 años vs 21,2% en ≥65 años, p menor de 0,001; 21,8% en hombres vs 11,6% en mujeres, p menor de 0,001). En total, 176.600 (8,7%) fueron clasificadas en el estrato de riesgo 1 y 803.710 (39,5%) en el 2. Según los estratos de riesgo considerados, la población susceptible de vacunación antineumocócica se situaría entre 0,2-1,9 millones en Cataluña y 1,5-12,3 millones en España.En nuestro ámbito, casi la mitad de la población ≥50 años tiene alguna condición de riesgo para padecer enfermedad neumocócica. El teórico tamaño de la población adulta susceptible de recibir la vacuna antineumocócica varía enormemente en función de los estratos de riesgo considerados como diana para la vacunación.

Keywords

Aged, Aged, 80 and over, Comorbidity, Cross-Sectional Studies, Female, Humans, Immunocompromised Host, Male, Middle Aged, Needs Assessment, Pneumococcal Infections, Pneumococcal Vaccines, Risk Assessment, Risk Factors, Spain

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