How have insects been harmful to humans? How have they been helpful?
Insects are our biggest competitor for food. Mosquitoes can spread diseases such as malaria, yellow fever, dengue fever and West Nile virus.
Answered -
About Yellow Fever
Yellow fever is a virus transmitted via mosquito to primates. It can cause fever, nausea and pain. It usually goes away after a couple days, but can be followed up with a ''toxic phase'' causing liver damage with jaundice, which gives the disease is name. Jaundice causes patients to have a yellowish skin tone and gives the eyes a yellowish tint. Yellow fever can also cause an increased risk of bleeding, which puts the disease in a category of hemorrhagic fevers.
About West Nile Virus
According to the Centers for Disease Control (CDC) West Nile virus (WNV) is a potentially serious seasonal (summer/fall) illness for which there is no specific treatment. Avoid mosquito bites by using repellent and wearing long sleeves. In mild cases people experience symptoms such as fever and aches that pass on their own, although even healthy people have become sick for several weeks.
About Fever
A fever is defined as a temperature of 1 degree or more above the normal 98.6 F. They can occur due to many different reasons. Some reasons include illness like scarlet fever, swine flu, and even hay fever (if your sinuses become infected). Illness from mosquitoes such as Dengue Fever and Malaria can cause severe fevers.Fevers can be symptoms of many diseases and conditions and are the body's attempt to get rid of toxins in the body. When a fever 'breaks', or goes down, it is often a sign that the disease has been overcome. Fevers can be dangerous if extreme.
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