What insect is responsible for transmitting both yellow fever and dengue fever?

The Aedes mosquito is the correct answer because it is known to be a vector for both yellow fever and dengue fever. This particular genus includes species such as Aedes aegypti and Aedes albopictus, which are highly effective in transmitting these viral infections to humans.

Yellow fever is transmitted primarily by Aedes aegypti, which thrives in urban environments and is adapted to live in close proximity to humans. Similarly, Aedes mosquitoes play a crucial role in the transmission of dengue fever, as they bite humans and can spread the dengue virus effectively in areas where they are prevalent.

In contrast, the Anopheles mosquito is mainly associated with the transmission of malaria and does not transmit yellow fever or dengue. The Culex mosquito is also not responsible for these diseases; it primarily spreads West Nile virus and other encephalitic viruses. Ticks are not involved in the transmission of these specific viral diseases, focusing instead on those such as Lyme disease and Rocky Mountain spotted fever. Understanding the role of specific mosquito species in disease transmission is vital for implementing effective public health measures in military settings and beyond.