The 1970 yellow fever epidemic in Okwoga District, Benue Plateau State, Nigeria. 3. Serological respopersons with and without pre-existing heterologous group B immunity
Monath, T P
Wilson, D C
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Serological studies of persons infected with yellow fever (YF) during the 1970 epidemic in Okwoga District, Nigeria, indicated that epidemic YF occurred despite a high prevalence of pre-existing group B arbovirus immunity, which increased with age. The viruses involved were primarily dengue, Zika, and Wesselsbron. Patterns of responses of haemagglutination-inhibiting, complement-fixing, and neutralizing antibodies in primary YF and in superinfections are defined in this paper.