Mosquito activity increases during summer in Oregon, and Oregon Health Authority (OHA) wants to be sure you know how to protect yourself against bites to reduce exposure to West Nile virus.
West Nile virus is the most common disease from mosquitoes in Oregon. Mosquitoes with the virus are found mostly in the eastern and southern parts of the state but have also been found all around the Pacific Northwest.
West Nile virus is mostly spread through the bites of mosquitoes that become infected after they bite infected birds. The virus can infect people, birds, horses, and other animals.
Know the signs of infection
- About one in five people with West Nile virus develop a fever and flu-like illness that can include headache, body aches, joint pain, vomiting, diarrhea, or a rash.
- Adults 50 and older, people with weak immune systems, and those with certain other health conditions have a higher risk of serious illness.
- In rare cases, the virus can cause neurological illness that can affect the brain or nervous system.
People who have a high fever, headache, stiff neck, confusion, muscle weakness, tremors, or paralysis should contact a health care provider right away.
Tips to reduce mosquitoes at home:
- Remove standing water around potted plants.
- Empty water from buckets, birdbaths, pet dishes, and other containers at least once a week.
- Clean gutters and drain areas.
- Remove old tires, unused containers, and outdoor debris that can collect water.
- Check areas under decks and shrubs, around barns or sheds, and other areas where water can collect.
Tips to protect yourself outdoors:
- Use an EPA-registered insect repellent and follow the label instructions.
- Consider limiting time outdoors at dawn and dusk, which is when mosquitoes are most active.
- When activity is high, wear long-sleeved shirts, long pants, and socks to protect yourself.
- Use mosquito netting over infant carriers and strollers.
- Use window and door screens to keep mosquitoes out of homes and buildings.
For more information about West Nile virus, how to prevent mosquito bites, and how mosquito and virus data is being tracked, visit OHA’s West Nile virus webpage.