The number of patients in a nationwide outbreak of infections from the foodborne Cyclospora parasite continue to increase, having reached 210 laboratory-confirmed cases.
Federal, state and local public health officials are investigating the outbreak, which is spread across 22 states and New York City, according to a June 22 update from the Centers for Disease Control and Prevention.
The CDC and the Food and Drug Administration have been tracking the outbreak since April 1. Additional infections could have started before that date.
Also, there are likely more than 210 people in the ongoing outbreak because of the lag time between when patients become ill and when confirmation testing can be completed and results filed with the CDC. Some sick people don’t seek medical attention, also impacting the outbreak count. The parasite is killed by using antibiotics. Specific tests are required to diagnose Cyclospora infections.
“No specific food items have been identified as the source of most of these illnesses. State and local public health officials are interviewing people with cyclosporiasis to find out what foods they ate before getting sick,” the CDC reported.

