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Dive into the research topics where J. Batalla is active.

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Featured researches published by J. Batalla.


Vaccine | 2003

Effectiveness of a mass hepatitis A vaccination program in preadolescents.

A. Domínguez; Salleras L; Gloria Carmona; J. Batalla

A program of mass hepatitis A+B vaccination in preadolescents in schools was begun in the Catalonia in the last quarter of 1998. This study investigated the impact of the program by comparing the incidence of hepatitis A in vaccinated and unvaccinated cohort. The greatest reduction of the incidence rate of hepatitis A was observed in the 10-14 years age group, from 10.3 per 100000 persons-year in the period 1996-1998 to 1.8 per 100000 persons-year in the period 1999-2001. The global incidence decreased from 6.2 to 2.6 per 100000 persons-year. After analysis of cases occurring in the vaccinated and non vaccinated cohort, the effectiveness of the vaccination program was estimated at 97.0% (95% CI: 78.6-99.6).


Vaccine | 1999

Measles immunity and vaccination policy in Catalonia

A. Domínguez; Josep Vidal; Pere Plans; Gloria Carmona; Pere Godoy; J. Batalla; L. Salleras

The prevalence of antibodies against measles in a representative sample of the school population in Catalonia was established and the results compared with previous studies. The study was carried out in 1996 using blood samples obtained from schoolchildren aged 6-7 years, 10-11 years, 13 14 years and 15-16 years. 1231 schoolchildren were studied. The global prevalence of antibodies was 96.3%, and a considerable increase was observed with respect to the prevalence in 1986 (89.4%). The level of antibodies was 94% at 6-7 years and 10-11 years, 99.7% at 13-14 years and 98.3% at 15 16 years. These data would suggest the advancement of the administration of the second dose of measles-mumps rubella vaccine to 4 6 years instead of at 11 years.


Vacunas | 2001

La cobertura de la vacunación antigripal en Cataluña

J. Batalla; L. Urbitztondo; M. Martínez; J.M. Batista; I. Parrón; Taberner Jl; Ll. Salleras

Resumen Fundamento En 1994 el Departamento de Sanidad y Seguridad Social (DSSS) inicio un programa de vacunacion antigripal que dirigio a grupos de alto riesgo de padecer la gripe o sufrir sus complicaciones. Este programa supuso un incremento de la actividad vacunal que hasta esta fecha se desarrollaba basicamente en el ambito privado y laboral. En este trabajo se presenta la cobertura de la vacunacion antigripal en Cataluna asi como un estudio para describir la poblacion vacunada. Material y metodos El estudio para describir la poblacion vacunada se realizo a partir de una muestra telefonica, representativa de la poblacion total de Cataluna. Resultados De la encuesta vacunal se deduce una cobertura poblacional del 24,6 ± 1,4. Un tercio de esta vacunacion corre a cargo de las mutualidades laborales y de las farmacias que las dispensan de forma privada. Los dos tercios restantes las proporciona la administracion. Conclusiones La implantacion del programa de vacunacion antigripal es capaz de prevenir un importante numero de casos en el pais, aunque este es susceptible de ser mejorado. Una mejora de la efectividad del programa se lograria, principalmente, incidiendo sobre la adhesion de los individuos que se niegan a vacunar.


Vacunas | 2009

Vacunación antihepatitis A: ¿selectiva o universal?

C Rodríguez; L Basile; L. Urbiztondo; E Borràs; J. Batalla

Resumen Objetivo Valorar la magnitud de la infeccion por el virus de la hepatitis A y la idoneidad de instaurar la vacunacion universal antihepatitis A en los calendarios vacunales de las Comunidades Autonomas (CC. AA.) espanolas. Metodos Se consideraron casos de hepatitis A los declarados al sistema de notificacion de Enfermedades de Declaracion Obligatoria desde 1997 a 2006 y al Boletin Epidemiologico de Cataluna en 1996. Se analizaron las incidencias anuales por Comunidad Autonoma, segun la aplicacion o no de la vacuna antihepatitis A en calendario vacunal. Se compararon estas incidencias para obtener el riesgo relativo, el riesgo atribuible y la fraccion atribuible en cada grupo. Resultados La reduccion de la incidencia de hepatitis A en las CC. AA. que vacunan frente a esta enfermedad de forma sistematica fue superior en comparacion con aquellas que vacunaron solamente a los grupos de riesgo; la fraccion preventiva fue del 58,22 frente al 36,74%, respectivamente. Conclusiones Actualmente, Espana es un pais de baja endemia, con un elevado porcentaje de individuos susceptibles y alta posibilidad de contacto entre susceptibles e infectados, por lo que la vacunacion selectiva deberia ser sustituida por la vacunacion universal.


Vacunas | 2003

Influenza vaccination: the prevalence of risk factors in persons aged 60 years and more in Catalonia

A. Domínguez; S. Juncà; R. Tresserres; J. Batalla; L. Salleras

SUMMARY Objective To study the prevalence of risk factors for influenza in the population aged 50-64 years in Catalonia. Material and methods The Catalan Health Survey, carried out 2002, was analyzed to determine the citizens needs, behaviour and opinions with respect to health and disease. The population used to select the sample was the Population Register of Catalonia, dated 1 January, 2001. The sample was selected in two stages: firstly, the municipalities of all seven regions and the municipal districts of Barcelona City were calculated and the number of interviews to carry out in each municipality was calculated proportionately to the demographic weight. Secondly, the individuals selected for interview in each municipality were selected by a random extraction method according to the population pyramid of each of each municipality or district. The questionnaire determined age, a history of myocardial infarction or other heart disease, asthma, chronic bronchitis and diabetes, and if the subject had been vaccinated against influenza in the previous season. Results Of subjects interviewed aged 15 years and more,15% had one or more risk factor, in subjects aged 60-64 years, 30.6% and in subjects aged 65 years and more, 37.4%. In subjects aged 60-64 years with one or more risk factor, vaccination coverage was 52.03% and in those aged 65 years and more, 71.87% (p = 0.0004). Conclusions The high prevalence of risk factors in persons aged 60-64 years in Catalonia and the low influenza vaccination coverage in persons at high risk due to medical conditions supports the recommendation of influenza vaccination from 60 years onwards, independently of whether risk factors are present or not.


Vacunas | 2000

Programa de sospecha de reacciones adversas a vacunas de Cataluña. Resultados del primer año

J. Batalla; I. Parrón; M. Boldú; Taberner Jl; L. Salleras

Fundamento Como consecuencia de las altas coberturas vacunales alcanzadas en estos ultimos anos, algunas enfermedades vacunables se han eliminado y otras han disminuido sus incidencias de manera muy importante. En estas circunstancias, la actividad vacunal puede entrar en crisis y los programas de reacciones adversas a vacunas adquirir un protagonismo importante. La Direccion General de Salud Publica empezo en 1999 un programa de prevencion de reacciones adversas a vacunas para conocer su dimension, abordar su tratamiento y planificar su prevencion. En este trabajo se presentan los resultados obtenidos durante este primer ano de programa. Metodo Para el desarrollo de este programa se ha creado un registro que recoge datos epidemiologicos y clinicos. La comparacion de la reactogenicidad de los distintos tipos de vacuna se ha llevado a cabo con el calculo del riesgo relativo y para medir la responsabilidad de la vacuna antidifterica, antitetanica y antipertusica de pared completa (DTPw) en la aparicion de las reacciones adversas, se calculo el riesgo atribuible y su fraccion etiologica. Resultados Durante 1999 se declararon 283 individuos que presentaron 415 reacciones vacunales. Estas incidieron principalmente en las primo vacunaciones (primeros dos anos de vida), en las vacunas que en su composicion contenia el antigeno tetanico y tambien en las vacunas con el componente pertusico de celulas enteras. Las vacunas combinadas no mostraron mayor reactogenicidad que aquellas formadas por vacunas de un solo componente. Conclusiones Cuando los programas de vacunacion consiguen disminuir de una manera importante la incidencia de las enfermedades en un area, la percepcion de su gravedad disminuye y tiende a valorarse los riesgos asociados a la vacunacion. En estos momentos, el conocimiento de las reacciones adversas a vacunas que nos acompanan adquiere una importancia capital para poder abordar su prevencion y tratamiento correcto.


Vacunas | 2005

Impacto de la vacunación contra la hepatitis B en Cataluña en la reducción del riesgo de desarrollo de hepatopatía crónica y hepatocarcinoma inducidos por el virus de la hepatitis B

L. Urbiztondo; J. Batalla; Taberner Jl

Aims Apprximately one-third of the worlds population has been infected by the hepatitis B virus (HBV) at some time, and a considerable percentage become chronic carriers. This leads to medium- and long-term complications, especially cirrosis and liver cancer. Hepatitis B vaccination began in Catalonia in the mid-1980s, with the vaccination of risk groups. In 1991, vaccination of pre-adolescents of 12 years in schools was implemented and in 1992, the hepatitis B vaccination was incorporated in the routine vaccination schedule of Catalonia. The objective of this study was to estimate the impact of hepatitis B vaccination on hepatic complications of chronic hepatitis B infection after two decades of vaccination in Catalonia and one decade of routine administration.


Vaccine | 2007

Vaccination coverage in indigenous and immigrant children under 3 years of age in Catalonia (Spain).

E. Borràs; Angela Domínguez; J. Batalla; Nuria Torner; Neus Cardeñosa; Manel Nebot; Antoni Plasència; L. Salleras


Vaccine | 2007

Declining prevalence of hepatitis B virus infection in Catalonia (Spain) 12 years after the introduction of universal vaccination

L. Salleras; Angela Domínguez; Miquel Bruguera; Pere Plans; Josep Costa; Neus Cardeñosa; J. Batalla; Antoni Plasència


Vaccine | 2005

Dramatic decline in acute hepatitis B infection and disease incidence rates among adolescents and young people after 12 years of a mass hepatitis B vaccination programme of pre-adolescents in the schools of Catalonia (Spain)

L. Salleras; Angela Domínguez; Miquel Bruguera; Neus Cardeñosa; J. Batalla; Gloria Carmona; Encarna Navas; Taberner Jl

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Taberner Jl

Generalitat of Catalonia

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A. Domínguez

Generalitat of Catalonia

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L. Salleras

University of Barcelona

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L. Urbiztondo

Generalitat of Catalonia

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Gloria Carmona

Generalitat of Catalonia

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I. Parrón

Generalitat of Catalonia

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M. Martínez

Generalitat of Catalonia

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Encarna Navas

Generalitat of Catalonia

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