Lenildo de Moura*
1, Lilian Maria Garcia Bahia-Oliveira†
1, Marcelo Y. Wada*, Jeffrey L. Jones‡, Suely H. Tuboi*, Eduardo H. Carmo*, Walter Massa Ramalho*, Natal J. Camargo§, Ronaldo Trevisan§, Regina M.T. Graça¶, Alexandre J. da Silva‡, Iaci Moura‡, J.P. Dubey#, and Denise O. Garrett**
Author affiliations: *Ministério de Saúde, Brasília, Brasil; †Universidade Estadual do Norte Fluminense Darcy Ribeiro, Rio de Janeiro, Brazil; ‡Centers for Disease Control and Prevention, Atlanta, Georgia, USA; §Secretaria de Saúde do Estado do Paraná, Curitiba, Brazil; ¶Laboratório Central de Saúde Pública, Curitiba, Brazil; #United States Department of Agriculture, Beltsville, Maryland; **Centers for Disease Control and Prevention Foundation, Atlanta, Georgia, USA
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Figure 1

Figure 1. Epidemic plot of the 155 cases registered from November 2001 to January 2002. The dates of the initial symptoms are known only for the 155 individuals among 156 who participated in the case control study.
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