Which two viral infections are transmitted by mosquitoes?

The correct answer highlights two significant viral infections, Yellow Fever and Dengue Fever, both of which are well-known for being transmitted by mosquitoes.

Yellow Fever is caused by the yellow fever virus and is primarily spread by the Aedes and Haemagogus species of mosquitoes. It presents serious health risks, including fever, chills, loss of appetite, and even liver damage in severe cases. Vaccination is key in preventing its spread, especially in endemic regions.

Dengue Fever is caused by the dengue virus, which is also transmitted by Aedes mosquitoes, particularly Aedes aegypti. It is characterized by high fever, severe headaches, pain behind the eyes, joint and muscle pain, and a rash. Like yellow fever, dengue can lead to serious complications such as Dengue Hemorrhagic Fever or Dengue Shock Syndrome in some patients.

The other options listed include infections that are not transmitted by mosquitoes. Malaria, while a significant disease in terms of mosquito transmission, is caused by parasites, specifically Plasmodium species. Psittacosis and Toxoplasmosis are primarily associated with birds and cats, respectively, with no mosquito vector involved. Finally, Histoplasmosis is a fungal infection, and Murine Typhus