Mosquito-Borne Illnesses in Maryland: What You Need to Know
Living in Maryland means long summer nights, lush greenery, and unfortunately—mosquitoes. While their bites are annoying, the real concern is the health risks they pose. In this post, we’ll explore the most common mosquito-borne illnesses found in Maryland, how they spread, and how you can protect your family with help from No MoSquitos.
Why You Should Take Mosquitoes Seriously
Mosquitoes are known as the deadliest creatures on Earth, not because of their bite, but because of the diseases they transmit. In the U.S., mosquito-borne illnesses are increasing due to rising temperatures, more frequent rain, and expanding mosquito populations.
In Maryland, local health departments monitor mosquito activity each summer, and while large outbreaks are rare, risk still exists—especially for young children, older adults, and those with weakened immune systems.
1. West Nile Virus (WNV)
What It Is:
West Nile Virus is the most commonly reported mosquito-borne disease in Maryland.
Symptoms:
Fever
Headaches
Body aches
Joint pain
In rare cases: neurological complications or meningitis
How It Spreads:
Transmitted by infected Culex mosquitoes, especially in late summer.
2. Eastern Equine Encephalitis (EEE)
What It Is:
A rare but very serious illness with a high mortality rate if contracted.
Symptoms:
Sudden onset of fever
Chills
Vomiting
Inflammation of the brain (encephalitis)
How It Spreads:
Spread by Culiseta melanura mosquitoes that breed in freshwater swamps.
3. La Crosse Encephalitis
What It Is:
Though more common in the Midwest, La Crosse Encephalitis has been found in the Mid-Atlantic, including parts of Maryland.
Symptoms:
Seizures
Vomiting
Lethargy in children
How It Spreads:
Transmitted by the treehole mosquito (Aedes triseriatus), often found in wooded areas.
4. Zika Virus (Rare in Maryland)
What It Is:
Zika made headlines globally for its effects on pregnant women, but it’s rare in Maryland and usually linked to travel.
Symptoms:
Mild fever
Rash
Conjunctivitis
Muscle pain
Other Potential Threats
Dengue and Chikungunya are not native to Maryland but can be brought back through travel.
These illnesses are closely monitored by the Maryland Department of Health.
How to Reduce the Risk of Mosquito-Borne Illness
1. Eliminate Standing Water
Mosquitoes lay eggs in stagnant water. Dump water from birdbaths, plant trays, and anything else that collects rain.
2. Wear Protective Clothing
Long sleeves and pants reduce skin exposure, especially during peak mosquito hours (dawn and dusk).
3. Use Repellent
Use EPA-approved repellents with DEET, picaridin, or oil of lemon eucalyptus when outdoors.
4. Install Screens and Seal Entry Points
Ensure all windows and doors have intact screens. Mosquitoes are small and can sneak through the tiniest cracks.
5. Schedule Professional Mosquito Control
The most reliable protection comes from regular yard treatments that eliminate breeding zones and adult mosquitoes on contact.
Why Choose No MoSquitos?
We’re not just any pest control company. We’re a local, Annapolis-based team that understands the unique mosquito threats in Maryland.
Our Process:
Yard inspection and risk assessment
Barrier spray treatment with EPA-registered products
Ongoing seasonal service plans
Pet-safe and child-safe solutions
What to Do If You Suspect a Mosquito-Borne Illness
If you experience flu-like symptoms after a mosquito bite, contact your healthcare provider. While many illnesses are mild, some require immediate attention.
Final Thoughts
Mosquitoes aren’t just a nuisance—they can pose serious health risks. But with the right prevention strategy and a reliable local partner like No MoSquitos, you can drastically reduce those risks and enjoy your yard with peace of mind.
📍 Serving Annapolis, MD and surrounding areas
👉 Book your free estimate and let us help protect your home and health.
