Classificação de risco em redes complexas: o caso da COVID-19 no Rio Grande do Sul
DOI:
https://doi.org/10.5902/2179460X66864Keywords:
Biomatemática, COVID-19, Dinâmica Espacial, Clusterização Espectral.Abstract
Peixoto et al. (2020) apresentaram uma metodologia que utiliza dados oriundos da mobilidade de pessoas para classificar municípios de um estado em três zonas de risco (baixo, médio e alto) em relação a uma doença contagiosa transmissível pelo ar. Os autores aplicaram o modelo para avaliar a exposição dos municípios dos estados de São Paulo e Rio de Janeiro à COVID-19, antes que o vírus estivesse amplamente disseminado. Nosso objetivo neste artigo é avaliar como essa metodologia de classificação de risco se aplica no Rio Grande do Sul e como ela se relacionou com a evolução da COVID-19 no estado. A partir dela, obtivemos uma classificação dos municípios do estado em três grupos de risco. Nessa divisão, com raras exceções, municípios mais próximos de Porto Alegre ficaram classificados como alto risco. A região da serra, do litoral e de alguns municípios no oeste do estado ficaram em um risco médio. Os demais municípios foram classificados com risco baixo. Em comparação com os dados oficiais sobre a disseminação da doença no estado verificamos que o risco atribuído foi coerente com a evolução da COVID-19. De um ponto de vista metodológico, encontramos evidências, via clusterização espectral, que dividir os municípios em três grupos é a melhor escolha para os nossos dados.
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