a<p>Annual Parasite Index at the year of survey with the respective classification (low or high) as reported by the Brazilian Ministry of Health (<a href="http://www.saude.gov.br/sivep_malaria" target="_blank">www.saude.gov.br/sivep_malaria</a>).</p><p>Sucuriju village is usually considered as malaria-free area.</p><p>Baseline characteristics of the study area where all municipalities are in the Pará state with the exception of Sucuriju village (in the Amapá state).</p