Comparison of dengue-2 and dengue-3 virus strains by neutralization tests and identification of a subtype of dengue-3

ABSTRACT

Strains of dengue-2 and dengue-3 viruses of diverse geographic origins including southeast Asia, the Caribbean region, and Tahati were compared by plaque-reduction neutralisation tests with hyperimmune-mouse asctic fluids and human convalescent sera. The dengue-2 strains all appeared similar. The dengue-3 strains from the Caribbean and from Tahiti were similar to each other and differed significantly from the southeast Asian strains. A subtype of dengue-3 was defined (AU)