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Alencar, Carlos Henrique, Luciano Pamplona de Góes Cavalcanti, Magda Moura de Almeida, Patrícia Pereira Lima Barbosa, Kellyn Kessiene de Sousa Cavalcante, Déborah Nunes de Melo, Bruno Cavalcante Fales de Brito Alves, and Jorg Heukelbach. "High Effectiveness of SARS-CoV-2 Vaccines in Reducing COVID-19-Related Deaths in Over 75-Year-Olds, Ceará State, Brazil." Trop Med Infect Dis 2021.

Alencar, Carlos Henrique, et al. "High Effectiveness of SARS-CoV-2 Vaccines in Reducing COVID-19-Related Deaths in Over 75-Year-Olds, Ceará State, Brazil." Trop Med Infect Dis 2021.