Effectiveness of a Meningococcal Group B Vaccine (4CMenB) in Children.

BACKGROUND: In September 2015, the four-component, protein-based meningococcal serogroup B vaccine (4CMenB; Bexsero) became available for private purchase in Spain. METHODS: We conducted a nationwide matched case-control study to assess the effectiveness of 4CMenB in preventing invasive meningococcal disease in children. The study included all laboratory-confirmed cases of invasive meningococcal disease in children younger than 60 months of age between October 5, 2015, and October 6, 2019, in Spain. Each case patient was matched with four controls according to date of birth and province. 4CMenB vaccination status of the case patients and controls was compared with the use of multivariate conditional logistic regression. RESULTS: We compared 306 case patients (243 [79.4%] with serogroup B disease) with 1224 controls. A total of 35 case patients (11.4%) and 298 controls (24.3%) had received at least one dose of 4CMenB. The effectiveness of complete vaccination with 4CMenB (defined as receipt of at least 2 doses, administered in accordance with the manufacturer's recommendations) was 76% (95% confidence interval [CI], 57 to 87) against invasive meningococcal disease caused by any serogroup, and partial vaccination was 54% (95% CI, 18 to 74) effective. Complete vaccination resulted in an effectiveness of 71% (95% CI, 45 to 85) against meningococcal serogroup B disease. Vaccine effectiveness with at least one dose of 4CMenB was 64% (95% CI, 41 to 78) against serogroup B disease and 82% (95% CI, 21 to 96) against non-serogroup B disease. With the use of the genetic Meningococcal Antigen Typing System, serogroup B strains that were expected to be covered by 4CMenB were detected in 44 case patients, none of whom had been vaccinated. CONCLUSIONS: Complete vaccination with 4CMenB was found to be effective in preventing invasive disease by serogroup B and non-serogroup B meningococci in children younger than 5 years of age.

Cobertura y adherencia a la vacunación frente a la gripe en menores de 15 años con condiciones de riesgo en la Comunidad de Madrid / Vaccination against influenza: Coverage and adherence in children under 15 years with high-risk medical conditions in the Community of Madrid

Introducción: La vacunación antigripal está especialmente indicada en población infantil con riesgo de complicaciones o enfermedad grave. El objetivo de este estudio es describir el porcentaje de vacunación frente a la gripe en menores de 15 años con condiciones de riesgo en la Comunidad de Madrid, así como analizar los factores asociados a la adherencia vacunal a lo largo de tres campañas de vacunación. Material y métodos: Estudio observacional, transversal, de base poblacional de niños/as de seis meses a 14 años y con condiciones de riesgo que tuvieran indicación de vacunación antigripal al inicio de la campaña 2018-2019. Se emplearon registros poblacionales electrónicos. Se describió el porcentaje de vacunados durante tres campañas consecutivas. Se analizó mediante análisis bivariado y multivariado la asociación de la adherencia vacunal con variables demográficas, socioeconómicas y condiciones de riesgo. Resultados: La cobertura vacunal fue del 15,6% en la campaña 2018-2019. La adherencia a la vacunación fue del 65,9%. Se asociaron a una mayor adherencia edad ≥ 3 años, fundamentalmente de 6-10 años (ORa=1,63; IC 95% [1,43-1,85]) y presentar más de una condición de riesgo, especialmente ≥ 3 (ORa=1,80; IC 95% [1,00-3,26]). La enfermedad más asociada fue diabetes mellitus (ORa=2,15; IC 95% [1,74-2,65]). Las personas extranjeras presentaron menor adherencia (ORa=0,43; IC 95% [0,36-0,51]). No se encontraron diferencias en la adherencia según sexo ni nivel socioeconómico. Conclusiones: La adherencia y cobertura vacunal se encuentran en niveles subóptimos. La adherencia a la vacunación antigripal se asocia a características demográficas y clínicas. Es necesario establecer estrategias para incrementar la vacunación en población infantil, con mayor implicación de profesionales y formación de progenitores. (AU)

Introduction: Vaccination against influenza is indicated in children at risk of complications or severe disease. The objective of this study was to describe the percentage of children aged less than 15 years with risk conditions vaccinated against influenza in the Community of Madrid, and to analyze the factors associated with adherence to vaccination throughout 3 vaccination campaigns. Materials and methods: Population-based cross-sectional observational study of children aged 6 months to 14 years with conditions that indicated influenza vaccination at the beginning of the 2018–2019 campaign. Electronic population registers were used. We described the percentage of children vaccinated in 3 consecutive campaigns, and assessed the association of adherence to vaccination with demographic and socioeconomic variables and risk conditions using bivariate and multivariate analysis. Results: The vaccination coverage was 15.6% in the 2018–2019 campaign. The adherence to vaccination was 65.9%. The variables associated with greater adherence were age greater than 2 years, especially in the 6–10 years group (aOR=1.63; 95% CI: 1.43–1.85) and presenting more than one risk condition, especially 3 or more diseases (aOR=1.80; 95% CI: 1.00–3.26). Diabetes mellitus was the disease associated most strongly with adherence (aOR=2.15; 95% CI: 1.74–2.65). Adherence was lower in the immigrant population (aOR=0.43; 95% CI: 0.36–0.51). We found no association between vaccination adherence and sex or socioeconomic status. Conclusions: Vaccination coverage and adherence were suboptimal. Adherence to vaccination against influenza is associated with demographic and clinical conditions. Strategies need to be established to increase vaccination in children, with greater involvement of professionals and education of parents. (AU)

Vaccination against influenza: Coverage and adherence in children under 15 years with high-risk medical conditions in the Community of Madrid.

INTRODUCTION: Vaccination against influenza is indicated in children at risk of complications or severe disease. The objective of this study was to describe the percentage of children aged less than 15 years with risk conditions vaccinated against influenza in the Community of Madrid, and to analyze the factors associated with adherence to vaccination throughout 3 vaccination campaigns. MATERIALS AND METHODS: Population-based cross-sectional observational study of children aged 6 months to 14 years with conditions that indicated influenza vaccination at the beginning of the 2018-2019 campaign. Electronic population registers were used. We described the percentage of children vaccinated in 3 consecutive campaigns, and assessed the association of adherence to vaccination with demographic and socioeconomic variables and risk conditions using bivariate and multivariate analysis. RESULTS: The vaccination coverage was 15.6% in the 2018-2019 campaign. The adherence to vaccination was 65.9%. The variables associated with greater adherence were age greater than 2 years, especially in the 6-10 years group (aOR = 1.63; 95% CI, 1.43-1.85) and presenting more than one risk condition, especially 3 or more diseases (aOR = 1.80; 95% CI, 1.00-3.26). Diabetes mellitus was the disease associated most strongly with adherence (aOR = 2.15; 95% CI, 1.74-2.65). Adherence was lower in the immigrant population (aOR = 0.43; 95% CI, 0.36-0.51). We found no association between vaccination adherence and sex or socioeconomic status. CONCLUSIONS: Vaccination coverage and adherence were suboptimal. Adherence to vaccination against influenza is associated with demographic and clinical conditions. Strategies need to be established to increase vaccination in children, with greater involvement of professionals and education of parents.

[Evaluation of a meningococcal ACWY catch-up vaccination program for adolescents on Community of Madrid.] / Evaluación de la vacunación de rescate frente a meningococo ACWY en adolescentes de la Comunidad de Madrid.

OBJECTIVE: In 2019 the Interterritorial Board of the Spanish National Health System approved the modification of the vaccination strategy against meningococcus. The objective of this study was to evaluate the meningococcal ACWY catch-up vaccination program in adolescents born in 2001 and 2002 in the Community of Madrid. METHODS: Cross-sectional population-based study. Vaccine coverage was estimated and factors associated with vaccination were assessed using logistic regression models. RESULTS: Vaccination coverage was 57.1% for those born in 2001 and 51.9% for those born in 2002. The probability of vaccination was higher in women (ORa=1.18), adolescents with chronic conditions (ORa=1.38), residents in rural areas (ORa=1.76) and in areas with lower socioeconomic level. Being born in 2002 (ORa=0.78) and abroad (ORa=0.35) were associated with a lower probability of vaccination. CONCLUSIONS: Coverage is high compared to similar campaigns in other settings, although there is significant room for improvement, so our study can contribute to the design of strategies to optimize results.

OBJETIVO: En 2019, el Consejo Interterritorial del Sistema Nacional de Salud aprobó la modificación de la estrategia de vacunación frente a meningococo. El objetivo de este estudio fue evaluar la vacunación de rescate frente a meningococo A, C, W, Y en adolescentes nacidos en 2001 y 2002 en la Comunidad de Madrid. METODOS: Se realizó un estudio transversal de base poblacional. Se determinó la cobertura vacunal y los factores asociados a la vacunación, utilizando modelos de regresión logística. RESULTADOS: La cobertura vacunal fue del 57,1% para nacidos en 2001 y del 51,9% para nacidos en 2002. La probabilidad de vacunación fue mayor en mujeres (ORa=1,18), adolescentes con alguna enfermedad crónica (ORa=1,38), residentes en el ámbito rural (ORa=1,76) y en zonas con menor nivel socioeconómico. Haber nacido en 2002 (ORa=0,78) y en el extranjero (ORa=0,35) se asociaron a una menor probabilidad de vacunación. CONCLUSIONES: La cobertura es elevada en comparación con campañas similares en otros entornos, aunque existe un importante margen de mejora, por lo que nuestro estudio puede contribuir al diseño de estrategias para optimizar los resultados.

Evaluación de la vacunación de rescate frente a meningococo ACWY en adolescentes de la Comunidad de Madrid / Evaluation of a meningococcal ACWY catch-up vaccination program for adolescents on Community of Madrid

OBJETIVO: En 2019, el Consejo Interterritorial del Sistema Nacional de Salud aprobó la modificación de la estrategia de vacunación frente a meningococo. El objetivo de este estudio fue evaluar la vacunación de rescate frente a meningococo A, C, W, Y en adolescentes nacidos en 2001 y 2002 en la Comunidad de Madrid. MÉTODOS: Se realizó un estudio transversal de base poblacional. Se determinó la cobertura vacunal y los factores asociados a la vacunación, utilizando modelos de regresión logística. RESULTADOS: La cobertura vacunal fue del 57,1% para nacidos en 2001 y del 51,9% para nacidos en 2002. La probabilidad de vacunación fue mayor en mujeres (ORa=1,18), adolescentes con alguna enfermedad crónica (ORa=1,38), residentes en el ámbito rural (ORa=1,76) y en zonas con menor nivel socioeconómico. Haber nacido en 2002 (ORa=0,78) y en el extranjero (ORa=0,35) se asociaron a una menor probabilidad de vacunación. CONCLUSIONES: La cobertura es elevada en comparación con campañas similares en otros entornos, aunque existe un importante margen de mejora, por lo que nuestro estudio puede contribuir al diseño de estrategias para optimizar los resultados

OBJECTIVE: In 2019 the Interterritorial Board of the Spanish National Health System approved the modification of the vaccination strategy against meningococcus. The objective of this study was to evaluate the meningococcal ACWY catch-up vaccination program in adolescents born in 2001 and 2002 in the Community of Madrid. METHODS: Cross-sectional population-based study. Vaccine coverage was estimated and factors associated with vaccination were assessed using logistic regression models. RESULTS: Vaccination coverage was 57.1% for those born in 2001 and 51.9% for those born in 2002. The probability of vaccination was higher in women (ORa=1.18), adolescents with chronic conditions (ORa=1.38), residents in rural areas (ORa=1.76) and in areas with lower socioeconomic level. Being born in 2002 (ORa=0.78) and abroad (ORa=0.35) were associated with a lower probability of vaccination. CONCLUSIONS: Coverage is high compared to similar campaigns in other settings, although there is significant room for improvement, so our study can contribute to the design of strategies to optimize results

Tuberculosis en la Comunidad de Madrid. Incidencia en personas extranjeras y españolas durante el período 1996-2004 / Tuberculosis in the Autonomous Region of Madrid, Spain. Incidence among foreign and spanish individuals during the 1996-2004 period

Fundamento: La inmigración desde países de alta prevalenciade tuberculosis hacia otros más desarrollados afecta a la evoluciónglobal de la tuberculosis en los últimos años. El objetivode este estudio fue describir la influencia de los casos de tuberculosisen personas extranjeras sobre la incidencia de la enfermedaden la Comunidad de Madrid en el período 1996 a 2004.Métodos: Los datos procedían del Registro Regional deCasos de Tuberculosis, y del padrón de 1996 y los padronescontinuos de 1998 a 2004. Se estimó la incidencia de tuberculosissegún país de origen desde 1996 a 2004, por sexo y gruposde edad. Se calcularon c2 para tendencia lineal, razones deincidencia y proporción de casos en personas extranjeras.Resultados: La incidencia de tuberculosis pasó de 34,3casos por 105 habitantes en 1996 a 16,9 casos por 105 habitantesen 2004. Para los nacidos en España cambió de 33,2 casospor 105 habitantes en 1996 a 12,7 casos por 105 habitantes en2004, y para los extranjeros de 50,5 casos por 105 habitantesen 1996 a 42,9 casos por 105 habitantes en 2004. La razón dela incidencia entre extranjeros y españoles fue superior a 1 entodos los años, con valor máximo en 2003, en el que se detectaron4,2 casos en extranjeros por cada caso en españoles (IC95% 3,7-4,7). El porcentaje de casos extranjeros pasó del 5,2%en 1996 al 35,1% en 2004.Conclusiones: La incidencia de tuberculosis en extranjerosfue mayor que entre los españoles y no disminuyó significativamenteen el período 1996-2004, lo que está contribuyendoa que la tuberculosis se haya estabilizado. Esta situación ylas características de esta población han de ser tenidas en cuentaen los esfuerzos para el control de esta enfermedad(AU)

Backgound: Immigration from countries having a highprevalence of tuberculosis to other more highly-developedcountries has a bearing on the overall evolution of tuberculosisin the latter. This study is aimed at describing the influenceof the cases of tuberculosis among foreign individuals onthe incidence of this disease in the Autonomous Community ofMadrid during the 1996-2004 period.Methods: The data was taken from the Regional TuberculosisCase Registry and from the 1996 census and the continuouscensuses from 1998 to 2004. The tuberculosis incidencewas estimated by country of origin from 1996 to 2004, bygender and by age groups. A calculation was made of the c2for the linear trend, reasons for incidence and proportion ofcases among foreign individuals.Results: The incidence of tuberculosis went from 34.3cases per105 inhabitants in 1996 to 16.9 cases per105 inhabitantsin 2004. For those born in Spain, it changed from 33.2cases per 105 inhabitants in 1996 to 12.7 cases per 105 inhabitantsin 2004; and for foreign individuals, from 50.5 casesper 105 inhabitants in 1996 to 42.9 cases per 105 inhabitantsin 2004. The reason for the incidence between foreign andSpanish individuals was greater than 1 for all years, the maximumfigure having been in 2003, when 4.2 cases were detectedamong foreigners for every case among Spanish individuals(95% CI 3.7-4.7). The percentage of foreign cases wentfrom 5.2% in 1996 to 35.1% in 2004.Conclusions: The incidence of tuberculosis among foreignerswas greater than among Spanish individuals and did notsignificantly decrease in the 1996-2004 period, which is contributingto tuberculosis having stabilized. This situation andthe characteristics of this population must be taken intoaccount in the efforts for controlling this disease(AU)

[Tuberculosis in the Autonomous region of Madrid, Spain. Incidence among foreign and Spanish individuals during the 1996-2004 period]. / Tuberculosis en la Comunidad de Madrid. Incidencia en personas extranjeras y españolas durante el período 1996-2004.

BACKGROUND: Immigration from countries having a high prevalence of tuberculosis to other more highly-developed countries has a bearing on the overall evolution of tuberculosis in the latter. This study is aimed at describing the influence of the cases of tuberculosis among foreign individuals on the incidence of this disease in the Autonomous Community of Madrid during the 1996-2004 period. METHODS: The data was taken from the Regional Tuberculosis Case Registry and from the 1996 census and the continuous censuses from 1998 to 2004. The tuberculosis incidence was estimated by country of origin from 1996 to 2004, by gender and by age groups. A calculation was made of the c2 for the linear trend, reasons for incidence and proportion of cases among foreign individuals. RESULTS: The incidence of tuberculosis went from 34.3 cases per 105 inhabitants in 1996 to 16.9 cases per 105 inhabitants in 2004. For those born in Spain, it changed from 33.2 cases per 105 inhabitants in 1996 to 12.7 cases per 105 inhabitants in 2004; and for foreign individuals, from 50.5 cases per 105 inhabitants in 1996 to 42.9 cases per 105 inhabitants in 2004. The reason for the incidence between foreign and Spanish individuals was greater than 1 for all years, the maximum figure having been in 2003, when 4.2 cases were detected among foreigners for every case among Spanish individuals (95% CI 3.7-4.7). The percentage of foreign cases went from 5.2% in 1996 to 35.1% in 2004. CONCLUSIONS: The incidence of tuberculosis among foreigners was greater than among Spanish individuals and did not significantly decrease in the 1996-2004 period, which is contributing to tuberculosis having stabilized. This situation and the characteristics of this population must be taken into account in the efforts for controlling this disease.