What are the two major vectors of West Nile Virus (WNV) in Florida?

The two major vectors of West Nile Virus (WNV) in Florida are indeed Culex nigripalpus and Culex quinquefasciatus. Both species are part of the Culex genus, which is known for its role in transmitting various arboviruses.

Culex nigripalpus is particularly significant in Florida due to its ability to thrive in the warm, humid climate of the state, making it an effective host for WNV. This mosquito is often found in residential areas and can breed in various water sources, including ornamental ponds and storm drains.

Similarly, Culex quinquefasciatus is known to be a competent vector for WNV as well. It has a wide distribution and shares overlapping habitats with Culex nigripalpus, contributing to the transmission cycle of the virus in urban and suburban environments.

Together, these two species are pivotal in the epidemiology of West Nile Virus in Florida, as they both are capable of efficiently feeding on birds, which serve as the primary reservoir for the virus. Given their ecological preferences and behaviors, they play a crucial role in the transmission and persistence of WNV in the state.

The other mosquito species mentioned in the other choices are not primary vectors