If you thought Chagas disease and the bug that causes it were exotic problems “somewhere else,” brace yourself: the “kissing bug” (triatomine insect) has now been confirmed in 32 U.S. states, and human infections have surfaced in at least eight of them. (Source: CDC)
The kissing bug is black or brown, with a cone-shaped head, long, thin antennae and thin legs. They have reddish, orange or yellow stripes around their edges, and are slightly bigger than a penny. They love to bite you at night while you’re sleeping. (of course.)
Why You Should Care
Endemic now: The CDC has classified Chagas as “endemic” in the U.S.—meaning the bug’s presence is established, and local transmission is possible, not just imported cases.
Under the radar: Experts estimate that over 300,000 people in the U.S. may already be infected—but fewer than 2% of them know it.
Serious implications: While many people never notice symptoms, 20–30% of infected individuals can develop cardiovascular or digestive complications years later—think enlarged heart, heart failure, or damage to the esophagus or colon.
How Chagas Spreads (You’ll Wish You Didn’t Know)
- The bug bites you—often on the face—hence the “kissing bug” nickname.
- It defecates near the bite site.
- When you itch or rub, the parasite (Trypanosoma cruzi) in the feces can enter your bloodstream through that break in skin.
- Symptoms in the acute phase might include: fever, fatigue, body aches, headache, nausea, vomiting, appetite loss—and one notable sign: severe swelling of the eyelid.
- Later, it can quietly damage the heart or digestive tissues without obvious warning.
States Impacted and What That Means for You:
So far, human infections have been documented in:
Arizona, Texas, Louisiana, Missouri, Mississippi, Arkansas, Tennessee, and California
Animals (pets or wildlife) with Chagas have been found in many more states: New Mexico, Oklahoma, Alabama, Georgia, Florida, South Carolina, North Carolina, Kentucky, Virginia, Maryland, and more.
In Los Angeles County alone, public health officials estimate up to 45,000 people may be infected.
What You Can Do (Because Yeah, Worrying Helps When You Do Something)
–Be bug-aware: Kissing bugs tend to hide in cracks, woodpiles, or poorly sealed buildings. At night they emerge.
–Keep your sleeping area sealed: Use window screens, repair gaps, keep outdoor lights off or far from your bedroom door (they’re drawn to lights).
–Use insecticides strategically: Some insect-control measures help reduce bug populations in and around homes. (I’m not a fan of any of the ‘cides, but you do you.)
–Get tested if suspicious: If you live in or near affected areas and have unexplained symptoms (especially if you’ve traveled in Latin America), talk with your doctor about Chagas testing.
–Don’t panic—but don’t ignore it: Most infected folks never develop serious disease. But early detection is key if intervention is needed.
What It Means for Public Health
Well, there’s been a shift in Chagas’ footprint, and several factors may have caused that shift. I think the most important thing is to be aware that it’s out there. No need to panic, just be aware. Like, “Oh! Just another creepy thing that can bite you in your bed at night.”
Source and more info on CDC Emerging Infectious Disease Page
****************************************
More gems from the blog:
The curious case of the pig liver xenotransplant!
The parasite that eats you alive: Meet the New World “Screw You” Worm