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Chagas disease, spread by 'kissing bugs', is increasingly prevalent in the US, affecting an estimated 300,000 people. Often undiagnosed, it's called a 'silent killer' due to its long asymptomatic period. Experts urge reclassifying it as endemic to raise awareness and improve tracking. Factors like deforestation, climate change, and increased bug populations contribute to the spread. While mostly asymptomatic, chronic infection can cause serious heart and digestive problems. California, Texas, and Florida have the highest numbers of chronic cases. Early detection through blood donation is often the only way people learn they are infected.

Prepared by Olivia Bennett and reviewed by editorial team.