First Positive Human West Nile Virus Case in Pueblo County

Pueblo, CO 7/25/25 — Public Health officials announced Pueblo County’s first human case of West Nile virus.

“It is very important for every individual to take precautions to avoid mosquitoes that spread West Nile virus illness,” stated Alicia Solis, program manager at the Pueblo Department of Public Health and Environment. “West Nile virus can be very serious, and in this case, has led to a hospitalization.”

West Nile virus develops in the human body within 2-14 days after a bite from an infected mosquito. West Nile virus can be serious including fever, meningitis, encephalitis, and have potential for causing long-term illness and disability. West Nile virus can affect any age group.

Symptoms of West Nile virus may include fever, fatigue, headache, muscle weakness, rash, stiff neck or changed mental state. Some infected persons experience a feeling of extreme tiredness and weakness for several weeks. Immediately seek medical attention if you have any of these symptoms.

PDPHE advises all individuals to protect themselves from West Nile virus by following the Four D’s:

  • DRAIN standing water around your house weekly. Remember to drain water from tires, cans, flowerpots, clogged rain gutters, rain barrels, toys and puddles.
  • DUSK and DAWN are when mosquitoes are most active. Limit outdoor activities and take precautions to prevent mosquito bites during these times.
  • DEET is an effective ingredient to look for in insect repellents. Always follow label instructions carefully.
  • DRESS in long sleeves and pants in areas where mosquitoes are active.

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