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Updated: Sep 10, 2025

Author Spotlight: Leptospira DNA Detection in Water for Environmental Analysis and Disease Surveillance
Published on: June 14, 2024
Epidemiological aspects of leptospirosis in Rio Grande do Sul during the 2024 Flood
Renan Konig Leal1, Millena Fernandes1, Caroline Pereira Vieira1
1Universidade do Sul de Santa Catarina (UNISUL), Programa de Pós-graduação em Ciências da Saúde (PPGCS), Tubarão, SC, Brasil.
Background:
Leptospirosis is a serious zoonosis. In 2024, Rio Grande do Sul (RS) experienced floods affecting 93% of the municipalities and 8.8% of the population. In this study, we reviewed the leptospirosis notifications post-flooding.
Methods:
Descriptive quantitative study using secondary data from the RS Health Department Epidemiological Report.
Results:
A total of 7,129 suspected cases were reported, of which 788 were confirmed. Porto Alegre had the highest number of cases and Travesseiro had the highest incidence rate. Epidemiological weeks 20-24 peaked in cases and deaths (47 total cases), with significant municipal variation.
Conclusions:
The 2024 floods caused a significant increase in leptospirosis, underscoring the need for a One Health approach and strengthening public health policies.
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