In this paper, we present the results of an extensive
molecular epidemiological analysis of DENV-4 in Bangkok,
Thailand, to determine the structure of viral genetic diversity
in this locality and the evolutionary processes responsible
for this structure. In particular, we wished to determine
whether the change in DENV-4 prevalence through time
could be associated with specific genetic changes in the
viral genome; that is, to what extent does adaptive evolution
in the viral genome influence long-term epidemiological
patterns? To this end, we have sequenced the E gene
sequences from 53 dengue viral isolates recovered during a
27-year period in Thailand and further determined the
complete coding region of the viral genome from six of
these strains.