Mosquitos are a well-known carrier for West Nile Virus, even though the last major outbreaks occurred in 2003 and 2012, there are still cases of this disease here in Virginia. This virus will present no symptoms in 8 out of 10 people. However 2 out of 10 will show symptoms such as headache, body pain, joint pain, diarrhea, vomiting, and a rash. In even rarer cases the virus will cause severe illnesses in all age groups which will lead to high fever, coma, convulsions, and paralysis.
Although much rarer there have been cases in the US of Zika and Dengue. Approximately about 2000 cases of malaria are diagnosed each year here in the United States all of which are due to mosquito bites. To protect yourself and your family, make sure to wear mosquito repellent when outside, especially in the summer and fall.