NO AUTHORS LISTED. Communicable Diseases Surveillance: CDI volume 21 issue 9 (1997). Communicable Diseases Intelligence, [S. l.], v. 21, p. 123–132, 1997. DOI: 10.33321/cdi.1997.21.27. Disponível em: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/1991. Acesso em: 13 apr. 2026.