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Percorrer por autor "Martinho, Júlia"

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  • Distribution of the West Nile Virus vector, Culex pipiens, in mainland Portugal: A geospatial modelling study
    Publication . Martinho, Júlia; Costa Osório, Hugo; Amaro, Fátima; Silva, Manuel; Marques Zé-Zé, Líbia Maria; Pereira Figueira Alves, Maria João; Nunes, Baltazar; Soares, Patricia
    Background: Culex pipiens, Portugal’s most abundant mosquito, is a vector for several pathogens including the West Nile virus. Understanding its spatial distribution can contribute to vector-borne diseases control and public health planning, given Portugal’s favourable climate. National-level data on its spatial distribution, especially in relation to climatic variables is limited. We aimed to predict the suitability of Culex pipiens distribution in mainland Portugal, considering climatic factors. Methods: A maximum entropy (Maxent) model was applied, using presence records for adult and larvae of Culex pipiens mosquitoes sampled across mainland Portugal between January 2017 and October 2023, as part of the REVIVE – Vector Surveillance Network program. Adults were sampled using CDC light traps and BG-Sentinel traps between May and October at random sites and year-round at point-of-entry sites. Larvae were sampled using dippers at breeding sites. Sampling bias was corrected by filtering presence records to one per 1 km2 cell grid. Climatic data, including temperature, precipitation and elevation, were used as predictors. Results: Out of 6,859 records, 354 unique sites were obtained after filtering and cell-duplicate removal. Suitable habitats seem to be primarily in the northern and central coastal regions. Temperature was the most important predictor. Convenience sampling bias may be present. Conclusions: Most West Nile virus case reports have come from southern Portugal, but Culex pipiens’s potential distribution covers the entire mainland territory, with seemingly higher distribution in the north. West Nile vector surveillance should be a priority in all regions to accurately assess transmission risk and implement effective control measures.
    2025-09-30Artigo científico Acesso restrito Ver mais
  • Rural–urban differences in healthcare utilization across different outcomes in Portugal
    Publication . Martinho, Júlia; Leite, Andreia
    Background: Urbanization influences healthcare access and utilization, contributing to health disparities. This study aims to assess the effect of degree of urbanization on healthcare utilization in Portugal, where urbanization levels are above global average. Methods: Utilizing data from the 2019 National Health Survey, this cross-sectional study analyzed the association between degree of urbanization and outcomes including general and specialist consultations, flu vaccination, colonoscopy, and wait times. Adjusted prevalence ratios (aPR) were estimated using Poisson regression models. Results: Less populated areas had increased wait times (aPR = 1.54; 95% confidence intervals [95% CI]: 1.06-2.24) and lower colonoscopy utilization (aPR = 0.86; 95% CI: 0.78-0.95). Flu vaccination rates were higher in rural (aPR = 1.15; 95% CI: 1.03-1.30) and suburban areas (aPR = 1.16; 95% CI: 1.04-1.30). No significant association was found for general/specialist consultations or excessive wait times. Conclusions: Geographic constraints limit healthcare access in less populated areas. Urban areas showed suboptimal flu vaccination rates, suggesting a need for improved immunization strategies. Addressing geographical disparities is crucial for ensuring equitable healthcare access across Portugal.
    2025-10-02Artigo científico Acesso restrito Ver mais