Salt Lake City launches bike-based mosquito brigade as invasive Aedes species spread nationwide

Salt Lake City’s Mosquito Abatement District, the nation’s first to field a bicycle-based control unit, dispatches four riders daily to spray larvicide into roughly 75,000 stormwater catch basins across the metropolitan area. Executive director Ary Faraji also operates a fish hatchery that supplies Western mosquitofish for private ponds, and the district runs extensive trap networks to monitor mosquito populations. The effort comes as invasive Aedes aegypti and Aedes albopictus have recently established themselves in states from Oregon to Colorado, expanding the threat of dengue, Zika, chikungunya and yellow fever.

Researchers link the mosquitoes’ northward march to climate warming and urban environments that lack natural predators, especially in lower-income neighborhoods. Public health officials such as John-Paul Mutebi in Miami-Dade warn that Florida is on the front lines, while scientists like Douglas Norris and Shannon LaDeau stress the need for continuous surveillance and funding. The Salt Lake program illustrates a proactive, integrated approach that many U.S. jurisdictions lack, highlighting gaps in federal and local mosquito-control resources.