Number of sera with neutralizing antibodies to DENV serotypes 1–4 according to (i) the neutralized serotype(s), (ii) the dominant serotype, (iii) the Island and (iv) the age class.

<p>Presented data concern a subset of 90 randomly selected DENV ELISA positive samples. (* Numbers may not add up as one individual serum may react with more than one serotype).