A Growing Threat in the Grass: Ticks Carrying Lyme Disease Move Into North Carolina
Families enjoying their backyards in North Carolina face a rising danger from an extremely small pest. A recent study reveals that the specific ticks responsible for spreading Lyme disease are expanding their territory in the state. In some western areas, the rate of infected ticks has reached levels typically seen in northern states where tick-borne illnesses have been a major problem for decades.
In the past, medical training in the region taught that Lyme disease was rare or nonexistent in the state. However, the local environment has changed significantly over the last ten years. Researchers decided to investigate the situation after hearing from local residents who became sick after spending time outdoors.
Hunting for Pests in Residential Neighborhoods
To understand the danger, researchers focused on a wooded residential community in the western part of the state. They chose this area after learning about 19 neighbors who suffered from tick-related illnesses. Out of those individuals, 17 had contracted Lyme disease.
Instead of searching deep inside state parks or national forests, the research team gathered samples directly from 25 private properties. Over a ten-month period from late fall to the following summer, they dragged white cloths across bushes and tall grass in people's yards. This method allowed them to collect the pests that normally cling to passing animals and humans.
This approach reflects the actual danger people face daily. Many modern properties feature a mix of manicured lawns and wooded areas. This layout invites deer, mice, and other wild animals right into backyards, making it easy for pests to travel from the wild onto private lawns.
What the Numbers Show
The collection efforts yielded a total of 373 ticks. The findings were highly concerning for local homeowners:
- Blacklegged ticks made up about 75% of all the specimens collected. This is the primary species that transmits the bacteria causing Lyme disease.
- Among the adult blacklegged ticks tested, 40% carried the bacteria responsible for Lyme disease.
- The same bacteria was also found in nearly half of the young, immature ticks tested.
Finding an infection rate of 40% in this region is unexpected. Historically, these high percentages were only found in northeastern states like Pennsylvania or New York. The data suggests that these northern tick populations are steadily migrating southward, with western North Carolina sitting at the edge of this expansion.
Other Hidden Health Risks
Lyme disease was not the only health concern uncovered during the study. Testing revealed that the collected pests also carried two other types of harmful bacteria:
- One bacteria linked to anaplasmosis, an illness that causes fever and body aches.
- Another bacteria that causes hard tick relapsing fever.
While these two pathogens were found in much smaller numbers than Lyme disease, their presence is still significant. National tracking maps suggest this discovery may represent the furthest south these two specific bacteria have ever been detected in local tick populations. This means residents and local doctors must now watch out for multiple types of illnesses.
How to Stay Safe Outdoors
With the threat growing, people living in or traveling through western and central parts of the state need to take extra precautions. Fortunately, simple habits can greatly reduce the risk of getting sick.
Unlike some other pathogens, the bacteria that causes Lyme disease is not transmitted instantly. It usually takes 24 to 36 hours of attachment for the tick to pass the bacteria to a human. This delay makes regular body inspections highly effective. If a person finds and removes a tick quickly, they will likely avoid infection.
However, searching for these pests can be difficult, especially during the spring. Young ticks are only about the size of a sesame seed, making them very easy to miss.
To stay safe, experts suggest several preventative steps:
- Apply bug spray containing DEET before heading outdoors.
- Keep lawn grass cut short to reduce the damp, shady areas where pests hide.
- Perform thorough body checks on children and pets immediately after they come inside.
Because of the rising danger, ten counties in western North Carolina now advise people to take a single preventative dose of antibiotics within 72 hours of finding a tick on their body. Additionally, veterinarians are encouraging pet owners to get their dogs vaccinated against Lyme disease to keep households safe.