Federal health officials have reported a surge in cases of a deadly parasite. The outbreak has resulted in hospitalizations and deaths. A total of 495 people have been hospitalized and two have died.

The parasite has been linked to recalled lettuce. The lettuce was grown in Mexico and distributed to retailers and restaurants. Further details about the distribution and specific lot numbers are available.

The Centers for Disease Control has recorded cases across 20 states, with some states newly added to the outbreak list.