Summer in Texas means sunshine, outdoor adventures, and yes—mosquitoes. With the Texas Department of State Health Services confirming the first West Nile virus case of 2026 in Harris County, it's a timely reminder to take simple steps to protect yourself and your family.

At Crestwood General, we believe that smart prevention starts with clear information. Here's a practical, easy-to-understand guide to West Nile virus and other mosquito-borne illnesses—and how to stay healthy all season long.

The Latest: First West Nile Case of 2026

Texas health officials have confirmed the state's first West Nile virus case of 2026 in a Harris County resident. The individual was diagnosed with West Nile neuroinvasive disease—the more serious form of the illness.

While this news may sound concerning, context matters: West Nile virus is a known presence in Texas during warmer months. The key is awareness, not alarm.

"West Nile and other mosquito-borne illnesses are a fact of life in Texas in the warmer months, and all Texans should take precautions against mosquito bites to stay safe and healthy," said DSHS Commissioner Dr. Jennifer A. Shuford.

Understanding West Nile Virus: What It Is and How It Spreads

West Nile virus is transmitted through the bite of infected mosquitoes. These mosquitoes typically become infected after feeding on birds that carry the virus.

Important facts:
- West Nile is not spread through casual contact like hugging, kissing, or sharing food
- It cannot be transmitted through handling live birds (though you should still avoid touching dead birds)
- The virus does not spread from person to person

What Happens After a Mosquito Bite?

Most people who get bitten by an infected mosquito never get sick. Here's the breakdown:

About 80% of people: No symptoms at all. The body clears the virus without ever knowing it was there.

About 20% of people: Develop West Nile fever, with symptoms like:
- Fever
- Headache
- Nausea or vomiting
- Muscle and joint aches
- Fatigue
- Sometimes a rash

These symptoms usually last a few days to a week, and most people recover fully.

Less than 1% of people: Develop West Nile neuroinvasive disease, a serious neurological illness that can cause:
- High fever
- Severe headache
- Neck stiffness
- Disorientation or confusion
- Tremors, seizures, or muscle weakness
- Paralysis
- In rare cases, death

Older adults and people with weakened immune systems are at higher risk for severe illness.

West Nile in Texas: Recent Trends

Over the past five years, Texas has reported 976 total West Nile cases (both fever and neuroinvasive forms). During that same period, 106 deaths were attributed to West Nile virus.

Year-by-year highlights:
- 2024 saw the highest number of deaths (57), though data remains provisional
- 2025 had the fewest fatalities (9)
- Cases tend to peak in late summer and early fall

These numbers remind us that while West Nile is a real concern, most people who are exposed do not develop serious illness—and prevention makes a significant difference.

Track Texas infectious disease data: DSHS Data & Case Reporting

Your Prevention Plan: Simple Steps That Work

Protecting yourself from West Nile—and other mosquito-borne illnesses—doesn't require complicated measures. Small, consistent habits make a big difference.

Eliminate Mosquito Breeding Sites at Home

Mosquitoes lay eggs in standing water. Take a few minutes each week to:
- Empty flowerpot saucers, buckets, and kiddie pools
- Turn over unused containers like toys or wheelbarrows
- Clean clogged rain gutters
- Refresh water in pet bowls and bird baths regularly
- Cover or treat rain barrels and water storage containers

Keep Mosquitoes Out of Your Home

Use air conditioning when possible
Ensure window and door screens are intact and fit tightly
Repair any holes or gaps that could let insects inside

Protect Yourself When Outdoors

Wear long-sleeved, loose-fitting shirts and pants, especially at dawn and dusk when mosquitoes are most active
Apply EPA-registered insect repellent containing DEET, picaridin, IR3535, or oil of lemon eucalyptus
Reapply repellent as directed, especially after swimming or sweating
Consider treating clothing and gear with permethrin for extra protection

These same steps also help protect against other mosquito-borne viruses like dengue, chikungunya, and Zika.

Learn more about mosquito bite prevention from the CDC: https://www.cdc.gov/mosquitoes/prevention/index.html

Beyond West Nile: Dengue and Chikungunya on the Radar

While West Nile gets attention in Texas, other mosquito-borne viruses are also worth knowing about.

Dengue Fever

Endemic in many tropical and subtropical regions, including the Caribbean, Central and South America, Africa, and Asia
Most Texas cases are linked to travel, though limited local transmission has occurred in southern Texas
About 25% of infected people develop symptoms: fever, rash, joint and bone pain, headache, nausea
Most recover within two weeks, but about 1 in 20 symptomatic cases can progress to severe dengue, which can be life-threatening without treatment

Chikungunya

Shares similar symptoms with dengue: fever, joint pain, rash, headache
Joint pain can be severe and sometimes lasts for weeks or months
A chikungunya vaccine is now available for travelers to endemic regions—ask your healthcare provider if it's right for you

Important Travel Note

If you travel to areas where dengue or chikungunya are common and become infected, local Texas mosquitoes could potentially bite you after you return and spread the virus to others. That's why prevention measures should continue even after you're back home.

Check CDC travel health notices before international trips: https://wwwnc.cdc.gov/travel/notices

When to Seek Medical Care

Most mosquito bites are harmless—but know when to reach out to a healthcare provider.

Contact your provider if you:
- Develop fever, headache, or other concerning symptoms after mosquito exposure
- Experience severe symptoms like confusion, stiff neck, muscle weakness, or difficulty moving
- Have recently traveled to an area with active dengue or chikungunya transmission and develop symptoms
- Are pregnant, over 60, or have a weakened immune system and are concerned about potential exposure

At Crestwood General, we provide compassionate, evidence-based evaluation for mosquito-borne illness concerns and other travel-related health issues.

No Vaccine for West Nile—But Prevention Works

Unlike some other vaccine-preventable diseases, there is currently no vaccine available for West Nile virus. That makes bite prevention and mosquito control even more important.

What you can do:
- Support community mosquito control efforts by reporting areas of standing water to local authorities
- Encourage neighbors to eliminate breeding sites on their properties
- Stay informed about local mosquito activity through your city or county health department

For healthcare providers: Early recognition and supportive care remain the cornerstone of West Nile management. Consider West Nile in patients with compatible symptoms and relevant exposure history, and report suspected cases to public health authorities promptly.

Access clinical resources from CDC: https://www.cdc.gov/westnile/healthcareproviders/index.html

Trusted Resources for More Information

Texas DSHS Mosquito-Borne Diseases: https://www.dshs.texas.gov/mosquito-borne-diseases
CDC West Nile Virus Overview: https://www.cdc.gov/westnile/index.html
CDC Dengue Information: https://www.cdc.gov/dengue/index.html
CDC Chikungunya Information: https://www.cdc.gov/chikungunya/index.html
EPA Insect Repellent Search Tool: https://www.epa.gov/insect-repellents
CDC Travel Health Notices: https://wwwnc.cdc.gov/travel/notices

Enjoy Summer—Safely

Mosquito season in Texas doesn't have to mean staying indoors. With simple, smart precautions, you can enjoy outdoor activities while reducing your risk of mosquito-borne illness.

Quick recap:
- Empty standing water around your home weekly
- Use EPA-registered repellent when outdoors
- Wear protective clothing during peak mosquito hours
- Keep screens in good repair and use air conditioning when possible
- Stay informed about travel-related risks before international trips

At Crestwood General, we're committed to helping you stay healthy through every season. Whether you have questions about mosquito bite prevention, travel health, or symptom evaluation, we're here to provide clear, compassionate guidance.

Because when it comes to your health, prevention isn't just practical—it's powerful. Stay informed, stay protected, and make the most of everything Texas summers have to offer.