San Diego County Records Its First Locally Transmitted Chagas Case

San Diego County announced its first locally acquired case of Chagas disease, detected in an asymptomatic blood donor during routine screening. The disease is spread by the kissing bug, which typically nests in rodent habitats; local exposure can occur through camping or outdoor activities. Chagas is more common in rural Latin America, but officials emphasize that local transmission is now a possibility. Since 2024, Chagas has been locally reportable, with 22 reports and four confirmed cases prior to this one. Early infection is often mild or flu-like, but untreated disease can cause serious heart or gastrointestinal problems years later. Officials advise preventive measures for travelers to endemic areas and recommend screening for people who have lived in Latin American countries, especially pregnant women.