Residents in a small city are facing a challenging situation where they feel confined in their own homes due to a severe infestation of mutant midges that are known to spread dangerous diseases. The city of Ilhota in Itajaí Valley, Brazil, is dealing with an invasion of maruim insects, a type of midge whose bites lead to various unpleasant symptoms. To avoid encounters with these mutant midges, residents are resorting to keeping their doors and windows shut while using fans to combat the resulting heat.
Numerous residents have expressed their frustration at having to endure the intense heat and cover up exposed skin to prevent attacks from these insects. They feel like prisoners within their own homes, as one resident, Patricia, emphasized in an interview with local publication Globo. Another resident, Jaqueline Fischer, highlighted the need to wear winter clothing in the hot weather to shield themselves from the bugs’ onslaught on their faces.
Unlike typical midges, maruim bites cause localized skin irritation, itching, and can transmit diseases like Oropouche fever, which mimics dengue and manifests with sudden fever, severe headaches, muscle pains, and vomiting. Despite residents’ efforts to seek help from authorities, the city officials have cited a lack of specific insect control products as the reason for the infestation’s unchecked spread to neighboring areas like Luiz Alves.
Authorities in Luiz Alves have tried using a biological larvicide against other midge species but have not yet effectively tackled the issue of the feared black flies. The infestation has had severe consequences for residents, including Veronita Pelz, a cancer patient who opted to stay in the hospital to escape the gnats.
The diseases transmitted by these midges pose a significant threat, especially to pregnant women, with two fetal deaths reported during a previous outbreak in 2024. Female maruim midges feed on humans to obtain blood for their breeding cycle, which can lead to severe health implications.
