Cyclospora cayetanensis is a microscopic parasite that can cause intestinal illness when ingested. It is a common cause of foodborne illness in tropical and subtropical regions, with symptoms including watery diarrhea, nausea, and abdominal cramping. Cyclospora infections are typically associated with fresh produce and contaminated water sources. Research in this area focuses on understanding the life cycle, transmission pathways, and treatment options for Cyclospora cayetanensis infections. Strategies for prevention and control of outbreaks are also a key area of study in this research field.