Maine is reporting two cases of cyclosporiasis so far this year, although they are not linked to a national outbreak of the diarrhea-causing illness, state health officials said.

The U.S. is undergoing a record outbreak of cyclosporiasis — which is caused by a microscopic parasite — with more than 4,700 cases reported nationwide by state and federal health agencies this year.

Cyclosporiasis is typically spread by fresh produce contaminated with the cyclospora parasite, and symptoms include diarrhea, intestinal cramping, fatigue, weight loss and fever.

Maine health officials say the cases here do not appear to be linked to the national outbreak. Michigan is seeing the most cases so far, with over 3,300 reported. Cases in Michigan, Ohio, West Virginia and Kentucky are likely connected, federal health officials said during a media call on Tuesday.

Federal officials said they have not identified a specific food linked to the outbreak, although Michigan health officials have said lettuce or salad greens are likely sources.

Lindsay Hammes, spokesperson for the Maine Center for Disease Control and Prevention, said in a statement on Tuesday that Maine has reported two cases in 2026, although “neither are linked to the ongoing national outbreak investigation, nor has a specific food source been linked to these cases.”

Gwen Biggerstaff, deputy director of the U.S. CDC’s division of foodborne, waterborne, and environmental diseases, said “we anticipate continuing to see cases increase through the end of August.”

“We are seeing an unusually high number of cyclosporiasis cases this year,” Biggerstaff said, although it’s unclear why. Bigerstaff said historically the parasitic disease in the U.S. is tied to international travel, but in the past few years cases are more likely to be linked to the domestic food supply.

Federal officials are investigating to determine whether certain food suppliers are the source of the outbreak.

Cyclosporiasis cases have been detected in 34 states and caused 141 hospitalizations, according to the U.S. CDC. No deaths have been reported so far.

To prevent cyclosporiasis, wash fresh produce and wash hands before handling produce or eating. Also, cooking vegetables will kill the parasite, Bigerstaff said.

If you suspect you have cyclosporiasis, you can request to be tested by your health care provider. For those who test positive, treatment is a course of antibiotics.