Nearly two dozen more cases of a food poisoning outbreak linked to romaine lettuce grown in Arizona have been reported.

The U.S.Centers for Disease Control and Prevention says the total number of people sickened by a strain of E. coli is now 172 – across 32 states.

At least 75 people have been hospitalized, including 20 with kidney failure. One person died in California.

Health officials say there is a lag time of two to three weeks – between when someone falls ill – and when it’s reported to the CDC.

The agency says the romaine lettuce was grown in Yuma, Arizona and was last harvested April 16th.

So, it should no longer be in stores and restaurants – because of its three-week shelf life.