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[The incidence of dengue virus infection in children 8 to 14 years old residing in the urban and rural areas of the city of Mérida, Yucatán].

A prospective type study was conducted with two school cohorts from the urban and rural municipal area of Mérida, with the purpose of finding the incidence of infection due to the dengue virus, in a 4 month period when transmission was expected to be the highest. The serologic tests of the paired samples were done using the inhibition hemagglutination technique (IHA). We found the incidence of dengue virus infections in the city of Mérida was 4.56%, while that for the rural area was 5.67%. The prevalence of serological reactive against the same virus during the second sampling was 56.84% for the urban area and 63.70% for the rural area. No significant statistical different were found among the urban and rural incidences nor among the prevalences. The average hematocrit value found in school children from the urban area was 41.7 mL/dL and 40.4 mL/dL in the rural area. When comparing the median results of the hematocrit values, were found that there was significant statistical differences.