Os efeitos da pandemia de covid-19 no discurso antivacinação infantil no Facebook / The effects of covid-19 pandemic on children's antivaccination discourse in Facebook / Los efectos de la pandemia de covid-19 sobre el discurso antivacunación infantil en Facebook

Este trabalho pretende analisar como o discurso antivacina sobre a covid-19 impactou o discurso sobre vacinação infantil no contexto da mídia social, a partir das estratégias e narrativas de legitimação construídas. Para isso, realizamos uma análise de mais de 260 mil publicações sobre vacinação infantil no Facebook (Meta) entre os anos de 2019 e 2022, com o objetivo de compreender: quais foram as estratégias discursivas utilizadas para legitimar o discurso antivacina e pró-vacina nesses anos; quais as principais narrativas construídas; e como a pandemia de covid-19 impactou nessa discussão. Os resultados indicam um crescimento e uma polarização do debate sobre vacinação infantil na mídia social, com a circulação de discursos desinformativos e conspiratórios. No contexto da pandemia, observamos que o discurso antivacina saiu da vacinação infantil contra a covid-19 e se espalhou para o debate sobre a vacinação infantil para outras doenças. Essas mudanças têm um impacto no discurso pró-vacina que se modifica para tentar responder ao movimento antivacinação.

This work intends to analyze how the anti-vaccination discourse on covid-19 impacted the discourse on childhood vaccination in the context of social media, based on the strategies and narratives of legitimation constructed. In order to do this, we carried out an analysis of more than 260 thousand publications about childhood vaccination on Facebook (Meta) between 2019 and 2022, focusing on understanding: what dis-cursive strategies were used to legitimize the anti-vaccine and pro-vaccine discourse during this period; what are the main narratives constructed; and how the covid-19 pandemic impacted this discussion. The results indicate a growth and polarization of the debate about childhood vaccination on social media, with the circulation of misinformative and conspiratorial discourses. In the context of the pandemic, we noted that the anti-vaccine discourse spread from childhood vaccination against covid-19 and started a debate on childhood vaccination for other diseases. These changes have an impact on the pro-vaccine discourse, that changes itself to try to respond to the anti-vaccination movement.

Este trabajo pretende analizar cómo el discurso antivacunas sobre la covid-19 impactó en el discurso sobre la vacunación infantil en el contexto de las redes sociales, a partir de las estrategias y narrativas de legiti-mación construidas. Para ello, realizamos un análisis de más de 260 mil publicaciones sobre vacunación infantil en Facebook (Meta) entre 2019 y 2022, con los objetivos de comprender qué estrategias discursivas se utilizaron para legitimar el discurso antivacunas y provacunas sobre los años; cuáles fueron las prin-cipales narrativas construidas; y cómo la pandemia de covid-19 impactó esta discusión. Los resultados indican un crecimiento y una polarización del debate sobre la vacunación infantil en las redes sociales, con la circulación de discursos desinformativos y conspirativos. En el contexto de la pandemia, observamos que el discurso antivacunas dejó la vacunación infantil contra el covid-19 y se extendió al debate sobre la vacunación infantil para otras enfermedades. Estos cambios tienen un impacto en el discurso provacunas, que cambia para responder al movimiento antivacunación.

Prevalencia y distribución del depósito pulmonar de amianto en población urbana española / Prevalence and Distribution of Asbestos Lung Residue in a Spanish Urban Population

IntroducciónEl objetivo del presente estudio es analizar la prevalencia y distribución de amianto en pulmón de población urbana de Barcelona.Material y métodosSe obtuvieron muestras pulmonares necrópsicas de 35 individuos que habían residido en Barcelona. Se llevó a cabo una entrevista con el familiar más cercano para descartar exposición al amianto. En el acto necrópsico, se obtuvieron muestras de 3 zonas del pulmón derecho: apical del lóbulo superior, apical del lóbulo inferior y base del lóbulo inferior. Las muestras fueron tratadas para la eliminación de la materia orgánica. El residuo inorgánico fue analizado mediante microscopía óptica. Los resultados se expresaron como cuerpos de amianto (CA) por gramo de tejido seco. Se consideraron como niveles potencialmente causantes de patología aquellos que superaron los 1.000CA/g de tejido seco.ResultadosSe detectaron CA en 29 sujetos (83%). El 86% de las muestras analizadas tenían niveles inferiores a 300CA/g. Únicamente un individuo (3%) presentó valores superiores a los 1.000CA/g tejido seco. En 17 individuos (48%), el depósito de amianto era mayor en el lóbulo pulmonar inferior que en el resto, aunque no se observaron diferencias significativas en cuanto al depósito de CA en las 3 zonas pulmonares estudiadas.ConclusionesLos resultados del presente estudio demuestran que la mayoría de la población urbana en nuestro medio tiene niveles de amianto en pulmón que oscilan entre 0–300CA/g tejido seco. En esta población no se han detectado diferencias en el depósito de amianto, según las zonas estudiadas(AU)

IntroductionThe purpose of the present study is to analyse the prevalence and distribution of asbestos lung residue in the Barcelona urban population.Material and methodsLung autopsy samples were obtained from 35 individuals who had lived in Barcelona. The close family were interviewed in order to rule out asbestos exposure. Samples were obtained from three areas of the right lung during the autopsy: upper lobe apex, lower lobe apex, and lower lobe base. The samples were treated to remove organic material. The inorganic residue was analysed using a light microscope. The results were expressed as asbestos bodies (AB) per gram of dry tissue. Levels greater than 1000AB/g of dry tissue were considered as potentially causing disease.ResultsAB were detected in 29(83%) of the subjects, of which 86% had levels less than 300AB/g. Only one individual (3%) had values greater than 1000AB/g dry tissue. The asbestos residue was higher in the lower lung lobe in 17 individuals (48%) than in the rest, although no significant differences were seen as regards AB residue in the three lung areas studied.ConclusionsThe results of this study show that the urban population of Barcelona have asbestos levels in the lung that vary between 0 and 300AB/g dry tissue. No differences in the asbestos residues were detected in the lung areas studied in this population(AU)

[Prevalence and distribution of asbestos lung residue in a Spanish urban population]. / Prevalencia y distribución del depósito pulmonar de amianto en población urbana española.

INTRODUCTION: The purpose of the present study is to analyse the prevalence and distribution of asbestos lung residue in the Barcelona urban population. MATERIAL AND METHODS: Lung autopsy samples were obtained from 35 individuals who had lived in Barcelona. The close family were interviewed in order to rule out asbestos exposure. Samples were obtained from three areas of the right lung during the autopsy: upper lobe apex, lower lobe apex, and lower lobe base. The samples were treated to remove organic material. The inorganic residue was analysed using a light microscope. The results were expressed as asbestos bodies (AB) per gram of dry tissue. Levels greater than 1000AB/g of dry tissue were considered as potentially causing disease. RESULTS: AB were detected in 29(83%) of the subjects, of which 86% had levels less than 300AB/g. Only one individual (3%) had values greater than 1000AB/g dry tissue. The asbestos residue was higher in the lower lung lobe in 17 individuals (48%) than in the rest, although no significant differences were seen as regards AB residue in the three lung areas studied. CONCLUSIONS: The results of this study show that the urban population of Barcelona have asbestos levels in the lung that vary between 0 and 300AB/g dry tissue. No differences in the asbestos residues were detected in the lung areas studied in this population.