Abstract
Objectives: To describe the epidemiological characteristics of the San Luis Health Districts - Maranhão, focusing on the three diseases transmitted by Aedes aegypti: dengue, zika and chikungunya. Methods: An observational, descriptive, retrospective, sectional study based on the observation of data recorded by the Diseases Information and Notification System (SINAN), provided by the Municipal Health Secretary of São Luis (SEMUS). Results: In 2011, there was a greater notification of dengue, with 5,378 cases. The female gender predominated and the age group with the highest number of notifications was 20 to 39 years. Notifications of zika virus and chikungunya started in 2015 with an epidemic peak in 2016. Bequimão Health District, the second most populous, reported the highest number of cases. Conclusion: The prevalence of diseases caused by Aedes aegypti presents in the three arboviruses, endemic variation related to population density and local health conditions, which, in this article, will privilege the study of the capital of Maranhão, where there is a lack of sanitary infrastructure and supply of water, deserving the attention of the health authorities and permanent action of the population.