More than 200 people have been infected by an intestinal parasite after reportedly eating vegetables from Fresh Del Monte Produce vegetable trays, the federal authorities said.

The Centers for Disease Control and Prevention reported there were 212 cases of the infection, cyclosporiasis, in Iowa, Michigan, Minnesota and Wisconsin as of Thursday.

Those infected reported eating from the prepackaged vegetable trays, which included broccoli, cauliflower, carrots and dill dip. Most of the trays were bought from Kwik Trip or Kwik Star convenience stores in those states, according to the C.D.C.

Del Monte and Kwik Trip could not be immediately reached for comment on Saturday.

Outbreaks of cyclosporiasis in the United States have been linked to imported fresh produce contaminated with a microscopic parasite called Cyclospora cayetanensis. The infection first gained prominence in the United States during an outbreak in the mid-1990s, and has shown up nearly every year since, the C.D.C. said.