U.S. health officials have recalled lettuce imported from Mexico after it was linked to an outbreak of cyclosporiasis, a parasitic infection that causes severe diarrhea. The lettuce came from a Mexican branch of Taylor Farms, a California-based produce supplier. The recall affects several brands and types of lettuce products, including some sold under the Taylor Farms label. The U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) are investigating the outbreak, which has sickened dozens of people in multiple states. Cyclosporiasis is caused by the Cyclospora cayetanensis parasite. It is typically spread by consuming contaminated food or water. Symptoms include watery diarrhea, loss of appetite, weight loss, stomach cramps, nausea, and fatigue. The illness can last for several weeks if not treated. The FDA advises consumers to check their refrigerators and discard any recalled lettuce. They also recommend washing hands and surfaces that may have come into contact with the contaminated produce. The outbreak is a reminder of the risks posed by imported fresh produce. Taylor Farms has not yet commented on the recall. The investigation is ongoing to determine how the contamination occurred.