Browsing by Author "Correa Parra, Juan"

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    Déficit de la vivienda en el Gran Santiago: evidencia empírica sobre conflictos y argumentos para repensar la planificación metropolitana
    (2023) Correa Parra, Juan; Vergara Perucich, Francisco; Truffello Robledo, Ricardo; Aguirre Núñez, Carlos
    En Chile existe un déficit de vivienda estructural que ha consolidado su aumento a pesar de la importante cantidad y montos otorgados como parte de la política habitacional, la cual se basa en la entrega de subsidios a la demanda. El presente artículo evalúa espacialmente la relación contradictoria entre esta política habitacional y variables socioeconómicas que permiten concluir que los subsidios no permiten romper con el proceso reproductivo del déficit habitacional. Para esto se aplica un estudio estadístico espacial en base a una regresión lineal múltiple para una evaluación preliminar y una regresión geográficamente ponderada para precisar los alcances territoriales de los resultados. El estudio se centra en la ciudad de Santiago de Chile, donde se concentra el 40% de la población nacional. Los hallazgos dan cuenta de la profunda contradicción entre la lógica subsidiaria, el fuerte desarrollo inmobiliario y el aumento del déficit habitacional, en un momento preciso dado los cambios a la constitución que se están desarrollando en Chile, para lo cual el derecho a la vivienda es uno de los aspectos que se deben incorporar la nueva carta magna de esa nación.
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    Population-based seroprevalence survey: post-pandemic COVID-19 vaccination, related factors, and geographic distribution of vaccine acceptability in Chile
    (2025) Nuñez-Franz, Loreto; Rubilar, Paola; Apablaza, Mauricio; Canales, Luis; Cortés, Lina J.; Molina, Xaviera; Said, Macarena; Olivares, Kathya; Correa Parra, Juan; Ramírez-Santana, Muriel
    Background Prevention of infectious diseases is based on host protection, especially using vaccines. Several factors have been linked to the acceptance of vaccines in the population. Chile achieved high COVID-19 vaccination coverage early in the pandemic. The study aimed to determine the prevalence of antigens and antibodies, vaccination status, geographical distribution, and factors related to vaccine acceptability. Methods In two Chilean cities, the fourth round of a population-based seroprevalence cross-sectional survey was conducted in May 2024. 654 participants aged seven or older were recruited. After signing consent, participants were interviewed, blood samples were taken to identify antibodies against SARS-CoV-2 using ELISA, and antigens were assessed through a nasal swab rapid test. Territorial analysis of the vaccine dose distribution was carried out. Results All participants tested negative for antigens and positive for antibodies against SARS-CoV-2, with an overall vaccination uptake rate of 98,5%. However, their vaccination status was heterogeneous. Territorial distribution showed a slight geographical clustering of vaccine doses in both cities. 52.7% had the basic scheme and/or boosters, 32.1% had the bivalent vaccine, and 13.7% had anti-Omicron. Self-report identification with a risk group was not associated with vaccine adherence. City, age, education, and comorbidities were associated with perceived and actual risk discrepancies. Conclusions Overall, vaccine acceptance is high. However, the acceptance of the last two doses was below expectations and showed heterogeneous geographical distribution. Adulthood is the most important predictor of vaccine uptake. Participants underestimated their level of risk. Risk communication must be improved, especially for risk groups, to help them perceive themselves as beneficiaries of vaccination. Efforts should be made to disseminate information on vaccine safety and counter misinformation to increase knowledge about vaccines.