WHEELING, Ill. (CBS) — The Cook County Department of Public Health says that at least 50 cases of gastrointestinal illness have been connected to eating at a large northwest suburban restaurant.

As WBBM Newsradio’s Steve Miller reports, as the county health department continues to talk to more people who ate at Bob Chinn’s Crab House in Wheeling, the number of cases of gastrointestinal illness continues to rise.

LISTEN: WBBM Newsradio’s Steve Miller reports

As of Wednesday evening, at least 50 cases had been connected to the restaurant and the health department expects that number to rise.

Dan Erdman, manager of Bob Chinn’s Crab House, said the restaurant was open again on Wednesday, after being closed for almost two days. And he said they’ve spent the past two days cleaning and sanitizing the restaurant “and working with the health department to make sure everything is ready to go, from codes to cleanliness; and we’ve done everything we can on our part.”

Erdman said Bob Chinn’s is marking its 30th anniversary this year. He said it is the fourth busiest restaurant in the country.