Dengue Type 3 Infection in Panama

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  • Pacific Research Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, P. O. Box 1680, Honolulu, Hawaii 96806

Reexamination of sera collected in Panama in 1954 by a plaque-reduction neutralization procedure indicated that dengue type 3, as well as dengue type 2, infection had occurred in that area between 1941 and 1954.