Which two species of mosquito are chiefly responsible for transmitting dengue in the U.S.?

The two species of mosquito that are chiefly responsible for transmitting dengue in the U.S. are Aedes aegypti and Aedes albopictus. Aedes aegypti is known as the yellow fever mosquito and is a primary vector for dengue fever, as well as Zika and chikungunya viruses. This species thrives in urban environments and has a close association with human populations, which increases its capacity to transmit these diseases.

Aedes albopictus, commonly referred to as the Asian tiger mosquito, has also been identified as a competent vector for dengue virus transmission. This species is capable of adapting to various climates and habitats, and its presence alongside Aedes aegypti enhances the risk of dengue outbreaks.

While other mosquito species mentioned, such as Anopheles gambiae and Culex pipiens, are significant in the transmission of different diseases—like malaria for Anopheles and West Nile virus for Culex—they are not the primary vectors for dengue in the U.S. Therefore, understanding the role of Aedes aegypti and Aedes albopictus is crucial for effective vector control and public health strategies in managing dengue fever outbreaks.