Mosquitoes pick up and carry disease pathogens, such as Zika and West Nile Virus, and transmit them from person to person through their bites.

You and your family—particularly the very young, the elderly and those with chronic diseases—could be at risk from the following mosquito-borne illnesses here in the U.S.:


Only 1 in 5 people infected with West Nile will have any symptoms, such as fever, headache, joint and body aches, vomiting or rash. However, about 1% of those infected will develop a serious neurological illness such as encephalitis or meningitis, which can lead to paralysis, death or other long-term effects.


This emerging threat only sickens about 20% of those infected. Common symptoms are fever, rash, joint pain or conjunctivitis (red eyes). In pregnant women infected, however, scientists are investigating the connection between Zika and serious birth defects.


Symptoms of Dengue can include high fever, serious headache or joint, muscle or eye pain, mild bleeding of gums or nose or easy bruising. Severe cases can progress to serious bleeding issues, including vomiting blood.


Most people infected with Chikungunya will develop symptoms such as fever and joint pain, headache, muscle pain, joint swelling, or rash. While the disease rarely results in death, symptoms can be severe and disabling.


Most infected by SLEV have no symptoms; others may experience fever, headache, nausea, vomiting, and tiredness. Though rare, inflammation of the brain can occur, particularly in older adults, and may result in long-term disability or death.


Most infected with EEEV do not become ill, but those who do experience sudden headache, high fever, chills and vomiting; this can progress into disorientation, seizures or coma, with approximately 33% mortality and significant brain damage in most survivors.

Well That's Kind of Scary!

What's being done to reduce the risk of mosquito-borne diseases?

Mosquito Abatement Districts (MADs)

These organizations coordinate mosquito surveillance and control activities, such as spraying, and provide public education about reducing local mosquito populations and protecting against mosquito bites.

Public Health Officials (PHOs)

These health experts, in communities across the U.S., are responsible for identifying and preventing disease outbreaks—including mosquito-borne diseases—and for responding with appropriate measures when outbreaks occur.

AND…there are important things you can do to help protect yourself and your family from mosquito-borne diseases...

Mosquitoes breed and lay their eggs in standing water, so dispose of old tires, buckets, planters and other containers in your yard that may collect water

Empty standing water from all containers on your property, including birdbaths, at least once a week

Fill in tree rot holes and hollow stumps that hold water

Clean clogged roof gutters

Drill holes into the bottom of tire swings

Make sure all windows in your home have screens in place; repair any holes or tears in screens

Contact a MAD in your Area


Health Office