The Campinas region in São Paulo has recorded a total of 577 cases of Hepatitis A and leptospirosis over the past five years, with data compiled by the Regional Health Department VII from 2022 to 2026. This alarming figure highlights the health risks associated with these diseases, which can be transmitted through contaminated water, particularly during and after heavy rainfall, when flooding is more likely to occur. Additionally, during this timeframe, there have been 20 reported fatalities due to leptospirosis, underscoring the urgency for preventive measures.

In light of the upcoming rainy season, local health authorities, specifically the Campinas Health Department, have stepped up their public health advisories. They are providing guidance on preventive actions citizens can take to avoid exposure to contaminated floodwaters, which can pose significant health risks. Given that summer storms often lead to street flooding and inundation of watercourses, there is a heightened concern for public health in vulnerable communities.

To combat these risks, the Campinas municipality has initiated distribution of sodium hypochlorite to residents living in areas most affected by flooding. This preventive measure is aimed at reducing the risk of disease transmission by ensuring safer water for households susceptible to contamination after heavy rains. Such proactive initiatives reflect the city's commitment to addressing public health challenges and mitigating the impact of natural events on community health.