Analysis of schistosomiasis cases and deaths in Brazil: epidemiologic patterns and spatio-temporal distribution, 2010-2022

Abstract

Schistosomiasis is a parasitic infection caused by a group of flatworms called Schistosoma. The disease is primarily found in developing countries, especially in rural areas with poor sanitation and limited access to clean water. Schistosomiasis is transmitted by contact with contaminated freshwater, such as rivers, lakes, and ponds, where the parasites’ larvae live. The aim of this article was to analyze the epidemiological variables of schistosomiasis cases (2010-2022) and deaths (2010-2020) in Brazil. This is a cross-sectional, descriptive, and quantitative epidemiologic study. The methodological strategy involved the analysis of epidemiological bulletins provided by the Sistema de Informação de Agravos de Notificação (SINAN) and the Sistema de Informação sobre Mortalidade (SIM) from 2010 to 2022. There were 93.521 reported cases of schistosomiasis and 5.495 deaths due to complications of this infection. The intestinal form was the most identified. Minas Gerais, São Paulo, Bahia, and Espírito Santo were the states with the highest prevalence of the disease. Males, of mixed race, aged between 20 and 39 years, and with a low level of education were the most affected. There were 732 cases of infection in pregnant women. Furthermore, 62.56% of the cases evolved to cure and 5.88% evolved to death by the notified disease. In conclusion, it is crucial to adopt prevention measures and access to education to effectively combat schistosomiasis.