West Nile virus
The West Nile virus season runs from May through October with case counts typically peaking in September.
If you’re planning to spend time outside, do what you can to protect yourself and your family from mosquito bites.
What are the trends of West Nile Virus in Mesa County?
What is West Nile Virus?
- West Nile virus is spread to people through the bites of infected mosquitoes. You cannot get the virus from another person.
- There are no vaccines to prevent it.
- There is no medication to treat it.
- Most human cases are reported in August and September, when mosquito activity is at its peak.
Frequently Asked Questions about West Nile Virus
- Most people who are infected with West Nile virus do not get sick. About 75-80% of cases are asymptomatic.
- Symptoms can appear 3 to 14 days after being bitten by an infected mosquito.
- For those who do experience symptoms, they can range from a mild flu-like illness to severe encephalitis, which is inflammation of the brain.
- People who are over the age of 50 are at the highest risk for severe illness.
- There's no way to predict how an individual will respond if they contract the virus.
-
Talk to a health care provider if you develop a fever with severe headaches or confusion.
- Use bug spray that contains DEET, Picaridin, IR3535, 2-undecanone, or oil of lemon eucalyptus.
- Dress in long sleeves and pants when in areas where mosquitoes are active.
- Avoid being outdoors at dusk and dawn when mosquitoes are most active.
- Drain any areas of standing water on your property.
- Mesa County Public Health tracks the human cases of West Nile virus.
- We partner with the Grand River Mosquito Control District, which monitors and treats mosquito populations.
- Both organizations work closely to keep our community safe.