Barata, Rita de Cássia Barradas. “ The Epidemics of Meningococcal Disease, 1970 1977: Its Appearance and Spread ”. Revista de Saúde Pública 22, no. 1 (February 1, 1988): 16–24. Accessed May 17, 2024. https://www.revistas.usp.br/rsp/article/view/23466.