Brazilian cities intensify mosquito control to curb dengue and chikungunya

The municipality of Nova Iguaçu expanded its fight against Aedes aegypti by deploying a motor‑fog (motofog) unit on a motorcycle, allowing insecticide application in hard‑to‑reach places such as the municipal cemetery, alleys, dead‑end streets and riverbanks. Health officials highlighted the need for community participation, urging residents to check their yards weekly.

In Rio de Janeiro, health teams inspected properties in 16 neighborhoods across the North, South, Southwest and West zones, completing over 6 million house visits and treating more than 848 000 potential mosquito breeding sites since early July. Educational and social‑mobilisation campaigns continue to stress public responsibility.

Varginha’s environmental surveillance launched an outreach program ahead of school holidays, distributing flyers and setting up information tents in city parks to teach families how to prevent spotted‑fever disease transmitted by ticks.

Campo Grande carried out a fumigation (fumacê) operation on Tuesday in the Centro‑Oeste, Moreninhas and Universitário districts, applying adult‑mosquito insecticide while asking residents to keep doors and windows open for effectiveness.

In Dourados, health authorities reported a sharp decline in suspected chikungunya cases, with no confirmed cases in the latest epidemiological week after a coordinated response involving the municipal emergency health operations centre, the Ministry of Health and local zoonoses control. Officials warned that vigilance must be maintained to prevent resurgence.