Haemagglutination inhibition tests on paired sera collected from cases of dengue-like illness in Madras city.
D001102:Arbovirus Infections / Q000453:epidemiology*; D002646:Chikungunya virus / Q000276:immunology*; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D066298:In Vitro Techniques; D007194:India