Summer means more time outside—and more encounters with insects. Beyond mosquitoes and ticks, another pest is starting to worry people in some areas: the assassin bug, often called the kissing bug. Many Americans have never heard of it, but reports of it are increasing in parts of the U.S., and its bite can carry serious health risks if it’s overlooked.

Assassin bugs feed on blood and can spread Chagas disease. After they bite, they often defecate near the wound, and parasites in the feces can enter the body through broken skin or through mucous membranes. Early signs can include fever, fatigue, headaches, rashes, or swelling—though some people notice no symptoms at all.

That absence of clear early symptoms is what makes Chagas disease especially dangerous. If it isn’t treated, the infection can silently harm the heart and other organs over time, sometimes causing severe complications years later. Assassin bugs are most commonly found in southern states and tend to hide in woodpiles, debris, porches, or small cracks in and around homes, occasionally making their way indoors at night.

Prevention matters most: remove yard clutter, seal gaps around doors and windows, and keep sleeping spaces well protected. If you think you’ve been bitten—particularly if you develop unusual swelling or start feeling sick—seek medical attention quickly, since early treatment can greatly improve outcomes. The goal is awareness, not panic: understanding the risk helps you enjoy summer more safely.