Gouvêa, D. S. A. de, & Nobre, F. F. (1991). The occurrence of meningococcal meningitis in a Southern region of Brazil, from 1974 to 1980, a point event model study . Revista De Saúde Pública, 25(2), 103-111. https://doi.org/10.1590/S0034-89101991000200004