El Paso West Nile Cases Climb to Four as Severe Illnesses Emerge in Older Residents

The West Texas city of El Paso is grappling with a concerning uptick in severe West Nile virus cases as health officials confirmed two additional infections late last week, pushing the county's total to four cases for the 2026 season. Both new cases involve residents in their 70s with underlying medical conditions, underscoring the virus's particular danger to vulnerable populations.

City-County Health Authority Dr. Hector Ocaranza didn't mince words about the risk. "West Nile virus continues to pose a serious health risk, particularly for older adults and individuals with underlying medical conditions," he said in a statement following the announcement. "While most people infected with the virus never develop symptoms, severe cases can result in life-threatening neurological complications."

The pattern emerging in El Paso mirrors a broader trend across Texas this summer. The Texas Department of State Health Services has tracked 748 positive mosquito pools statewide as of mid-July, with West Nile activity detected in multiple counties from the Panhandle to the Rio Grande Valley. The El Paso cases represent the westernmost cluster of human infections reported this season.

What makes the El Paso situation particularly noteworthy is the severity profile. All four confirmed cases have involved neuroinvasive disease—the most serious form of West Nile infection, which affects the brain and spinal cord. Approximately one in 150 infected people develop this severe neurological illness, and roughly 10% of those cases prove fatal.

The concentration of severe cases among older residents aligns with established epidemiological patterns. Adults over 60 face significantly elevated risk of developing serious complications from West Nile virus, a reality that has prompted El Paso health officials to intensify their public messaging around prevention.

Dr. Ocaranza's team is emphasizing what they call the "4 Ds" of mosquito protection: DEET-based repellents when outdoors, dressing in long sleeves and pants during peak exposure times, avoiding outdoor activities during dusk and dawn when mosquitoes are most active, and draining standing water where the insects breed.

That last point—draining standing water—takes on added urgency in desert climates like El Paso's, where residents might not associate their environment with mosquito risk. Yet the Culex mosquitoes that transmit West Nile virus thrive in artificial containers, clogged gutters, pool covers, and even the saucers beneath potted plants. Health officials are urging residents to adopt a "tip and toss" routine after any rainfall or lawn watering.

The El Paso cases form part of what the CDC has identified as an unusually active West Nile season across the southwestern United States. Arizona has reported deaths from the virus at rates five times the historical baseline, while Texas counties from Tarrant to Hays have documented positive mosquito pools and human infections.

For El Paso residents, the message from health officials is clear: the virus is circulating locally, the consequences of infection can be severe, and simple preventive measures remain the best defense. With summer heat showing no signs of breaking and mosquito season stretching into October, the four confirmed cases may represent just the beginning of the region's 2026 West Nile story.