Mosquitoes and West Nile Virus

General Mosquito Information


Mosquitoes breed in stagnant water from late May until the first frost, and are known to carry diseases such as West Nile Virus, Eastern Equine Encephalitis (EEE), malaria, Yellow Fever, dog heartworm, and Zika virus.

However, the City of Norwalk is taking many measures to protect area residents against mosquitoes and the various viruses they can spread.

Norwalk Mosquito Management Plan


Currently there are 47 species of mosquitoes identified in Connecticut, 12 of which are considered pest species to humans. The West Nile Virus was found in two species: culex pipiens, a common urban mosquito; and aedes vexan, a floodwater mosquito. Culex pipiens are most often responsible for transmission of West Nile Virus.

The City of Norwalk will utilize an integrated pest management approach to minimize the threat posed by the West Nile Virus. This includes: