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Logarithm of neutralizing antibody titers against the four DENV serotypes in recently infected and non-infected subjects (PRNT60). Mann–Whitney test. Comparison the logarithm of neutralizing antibody titers between recently infected and non-infected subjects. The error bars are 95% CI. *P = 0.0005 for DENV-1 infected (N = 38) versus DENV-1 (N = 99) not recently infected.
