Emergency room visits for tick bites have surged to the highest levels since 2017 across many regions in the United States, sparking concerns over a potential rise in Lyme disease and other illnesses spread by ticks. This information comes from the Centers for Disease Control and Prevention’s Tick Bite Tracker, which tracks weekly emergency visits related to tick encounters.
In April 2026, there were about 71 visits per 100,000 people related to tick bites, which is notably above the historical average of approximately 30 per 100,000. The data indicates that the highest rates of such ER visits were among children under 10 and adults aged 70 to 79.
Dr. Steven Goldberg, a family medicine specialist, highlighted how the geographic range of the black-legged tick has significantly expanded over the last 30 years, increasing the risk for Lyme disease and other tick-borne infections. He pointed out the Ohio River Valley as a particularly noteworthy case, where Lyme disease cases have jumped nearly tenfold in the past decade. This rise is attributed to the convergence of tick populations from the Northeast and Midwest.
Additionally, states like Virginia and West Virginia have reported increases in tick populations and related diseases. There’s a further concern regarding the dog tick expanding its range northward, which means conditions like ehrlichiosis and alpha-gal syndrome are becoming more prevalent in areas not previously noted for these diseases.
Experts also suggest that climate change might exacerbate the situation. Warmer and wetter conditions are becoming more favorable for ticks, allowing them to thrive in places that were once too cold. This change potentially leads to shorter lifecycles and quicker reproduction rates for ticks, as well as extending the habitats they can inhabit.
Goldberg mentioned that the recovery of white-tailed deer populations plays a crucial role too. These deer serve as hosts for the black-legged tick, and areas with more deer typically see higher incidences of Lyme disease.
Tick-borne Illnesses
Tick bites are notorious for transmitting various diseases, with Lyme disease being the most significant bacterial infection. In fact, cases of Lyme have reportedly increased two to three times over the past two decades, with the CDC noting around 476,000 Americans diagnosed and treated annually for this disease.
Other bacterial infections linked to tick bites include anaplasmosis and ehrlichiosis, while babesiosis, a malaria-like illness, can also arise from tick encounters. There’s further worry over alpha-gal syndrome, a condition triggered by tick bites that can lead to severe allergic reactions to red meat.
In terms of symptoms, common signs of tick-borne illnesses include fever, chills, fatigue, headaches, and muscle/joint pain. Dr. Suraj Sagar emphasized the importance of recognizing a characteristic “bull’s eye” rash that is often associated with Lyme disease. If someone suspects a tick bite, especially after being in a tick-friendly environment, they should seek medical attention. False negatives can happen in early detection, so treatment might begin based on symptoms rather than relying solely on lab tests.
Preventing Tick Bites
Currently, there aren’t any vaccines approved for tick-borne diseases in the U.S., so prevention is key. Goldberg suggests using EPA-approved repellents, wearing light-colored clothing in tick-prone areas, and thoroughly checking for ticks after time spent outdoors. For effective removal of ticks, it’s best to use tweezers to grasp them as close to the skin as possible and pull upward steadily.
Overall, the longer a tick remains attached, the greater the risk of disease transmission. For Lyme disease, infection generally requires at least 36 hours of attachment, while other diseases, such as Powassan virus, can transmit much faster. It’s crucial for people to be vigilant and proactive during tick season.
