Braga, Jose Ueleres, and Ana Freitas Ribeiro. “Biological, Social, and Healthcare Factors for Death Due to Influenza A(H1N1) During the 2009 Epidemic in Brazil”. Revista de Saúde Pública 58, no. 1 (July 22, 2024): 32. Accessed March 15, 2026. https://revistas.usp.br/rsp/article/view/230140.