West Nile Virus

DID YOU KNOW?

Since 1999, over 55,000 people have died from West Nile Virus in the United States. [2] While often mild, the virus can be deadly — especially for older adults and people with weakened immune systems.

KNOW THE RISK

  • West Nile Virus (WNV) is the leading cause of mosquito-borne disease in the continental U.S. and is most active during summer and early fall. [1]
  • About 20% of infected people develop symptoms such as fever, body aches, and fatigue. [1]
  • Mild symptoms include headache, joint pain, nausea, vomiting, and rash. These usually go away on their own but can persist for weeks. [1]
  • Those over 60 or with conditions like diabetes, hypertension, or cancer are at greater risk of severe complications, including meningitis or encephalitis.

MITIGATE THE RISK

1. No Vaccine Available — Prevention is Key

  • There is currently no vaccine or specific medication for West Nile Virus. Treatment focuses on relieving symptoms. [1]

2. Use Insect Repellent

  • Apply EPA-registered repellents containing DEET, picaridin, or oil of lemon eucalyptus when outdoors. [1]

3. Use Sunscreen First

  • If wearing both sunscreen and repellent, apply sunscreen first, then repellent to ensure effectiveness. [1]

4. Wear Protective Clothing

  • Wear long sleeves and pants treated with permethrin when possible, especially during dawn and dusk — when mosquitoes are most active. [1]

VECTOR SAFETY REMINDER

Mosquitoes don’t just bite — they transmit serious illnesses. Protect yourself and your family by using repellent, dressing smart, and reducing exposure to bites. A little prevention goes a long way toward avoiding a potentially life-threatening disease.

REFERENCES

  1. CDC – West Nile Virus Overview
  2. CDC – West Nile Virus Statistics

EVERYDAY SAFETY... EVERY DAY™

Keep safety top of mind all year with 365 practical workplace safety topics.

View the 2027 Daily Safety Calendar Explore Custom Corporate Editions