L. M. Calçada, P. P. R. Ribeiro, and J. da S. Santos, “ Prevenctive activity impact on vaccination in exantematic disease outbreaks Brazil - 2006 and 2007 ”, Saúde Soc., vol. 18, no. supl.1, pp. 82–82, Mar. 2009, doi: 10.1590/S0104-12902009000500037.