Guarujá works to combat dengue Disclosure / Guarujá City Hall The city of Guarujá, on the coast of São Paulo, announced a 72.97% reduction in dengue cases registered in the first five months of 2026. From January to May this year, the municipality recorded 700 occurrences of the disease, compared to 2,590 registered in the same period in 2025. According to the municipal administration, the numbers reflect the actions to prevent, monitor and combat the Aedes aegypti mosquito carried out by the Health Department's Endemic Disease Control team. ✅ Click here to follow the g1 Santos channel on WhatsApp. The result also follows the drop in mosquito infestation rates over recent years. In January 2026, the survey carried out by the city hall showed an infestation rate of 3.1%, the lowest recorded in the municipality in the recent series. The indicator measures the number of properties with the presence of Aedes aegypti larvae for every 100 homes inspected. For comparison, the rates were 8.5% in 2021, 9.7% in 2022, 6.5% in 2023, 4.7% in 2024 and 4.1% in 2025. Now on g1 The data also shows a reduction compared to previous years. Between January and May 2024, when the city faced one of the highest incidences of the disease, 8,003 cases were recorded. In the same period of 2023, there were 940 occurrences. Among the measures adopted by the municipality are weekly efforts to combat mosquitoes in neighborhoods with the highest rate of infestation, free screening of water tanks, inspections of scrapyards and recycling establishments, as well as inspections of schools and health units. The city also uses the pot-bellied fish (Poecilia reticulata) in large reservoirs as a form of biological control. The species feeds on the larvae of the mosquito that transmits dengue fever, helping to reduce proliferation. VIDEOS: g1 in 1 minute Santos