Rising Tick Populations in the US: What You Need to Know to Stay Safe

As warmer weather encourages Americans to spend more time outdoors—whether gardening, hiking, or swimming—there is an increasing concern about ticks, which are spreading across the United States and carrying microbes responsible for serious diseases like Lyme disease. Recent data indicates a significant rise in tick populations, especially in northern regions, with the number of ticks harboring multiple pathogens on the increase.

In the U.S., over 500,000 new cases of tick-borne illnesses are estimated to occur annually, with the majority in the Northeast and Midwest. Experts like Yetrib Hathout from Binghamton University highlight that ticks carry a variety of pathogens, not just the bacteria causing Lyme disease. When bitten, many patients receive antibiotics like doxycycline, which may not be effective against all pathogens such as Babesia, emphasizing the importance of accurate diagnosis.

The migration of certain tick-borne pathogens from southern regions to northern states is largely driven by climate change. Milder winters allow ticks, particularly deer ticks, to remain active longer each year, increasing exposure risk. Additionally, land development—such as construction and expansion of farms—creates environments conducive to tick survival by increasing populations of hosts like mice. An increase in these reservoirs enhances the chances of tick-borne disease transmission.

To combat this rising threat, prevention is crucial. Experts recommend wearing long-sleeved clothing and light-colored attire to make ticks more visible, applying Permethrin to clothing for insect repellency, and using DEET as an additional barrier. Staying on trails minimizes contact with overgrown vegetation where ticks tend to reside. Pets can serve as carriers, so checking animals for ticks is vital. Using sticky lint rollers to remove ticks from clothing and bedding, and laundering clothes in high heat, can help reduce the risk of tick attachment and survival.

Understanding the shifting landscape of tick habitats and pathogens underscores the importance of vigilance and prevention. As research continues, staying informed and adopting protective measures can reduce the chances of tick-borne illnesses during outdoor activities.

Source: https://medicalxpress.com/news/2025-06-surging.html