Egg - mosquitoes lay their eggs either directly in water or in areas that may soon flood. Mosquitoes may lay their eggs singly or in the form of an egg raft, which contains 200-300 individual eggs. They hang upside down at the surface of the water and breath air through a tube called a siphon. There is no vaccination. Approximately 10,000 people are infected each year.
Yellow fever damages the liver causing the skin to turn yellowish.
There is a vaccine available. About 1 million people are infected each year. Dengue fever causes a high fever, bone and joint pain, skin rash, hemorrhages under the skin, nausea, vomiting, swollen glands, and fatigue. No vaccine available. Viral Encephalitis Worldwide distribution.