Which mosquito is known to be a vector for yellow fever and prefers humans?

Aedes aegypti is the recognized vector for yellow fever, and it has a strong preference for humans as its primary host. This species is particularly adept at transmitting diseases due to its close association with human habitats and behaviors. Aedes aegypti is found in urban areas and is known for breeding in artificial containers, which are common in human environments. This adaptability increases its contact with humans, facilitating the spread of viruses such as yellow fever and dengue.

In contrast, the other options have different behaviors and habitats. Anopheles mosquitoes are primarily known for transmitting malaria and are more associated with rural areas and natural water sources. Culex mosquitoes are generally associated with producing West Nile virus but do not have the same preference for humans as Aedes aegypti. The term "dengue" refers to a disease caused by a virus carried by Aedes mosquitoes, particularly Aedes aegypti, but it is not a mosquito species itself. This highlights how Aedes aegypti stands out as the correct answer for being a primary vector for yellow fever that favors human hosts.