Centro Nacional de Epidemiología, Prevención y Control de Enfermedades, Peru Ministry
of Health, Lima Peru;
Ministry of Health, Lima Peru;
Instituto Nacional de Salud, Ministry of Health, Lima, Peru;
Division of Vector-Borne Diseases, National Center for Emerging and Zoonotic Infectious
Diseases, CDC;
Epidemic Intelligence Service, CDC;
South America Regional Office, CDC, Brasilia, Brazil.