A programming error by a vendor doing work for health care insurer ConnectiCare resulted in hundreds of subscribers getting identification cards of others as well as their own, company officials said last Friday.

About 700 ConnectiCare subscribers received the ID cards of others early last month, said Kimberly Kann, a spokeswoman for the company. The error occurred on Dec. 30, 2017, at a St. Charles, Illinois, facility of RR Donnelley, a Chicago-based communications company.

The 700 people who received the ID cards of other ConnectiCare customers represents about 0.005 percent of the company’s subscriber base, Kann said. Letters explaining the problem have been sent out over the past six weeks to everyone who was affected by the error and replacement cards were sent, she said.

ConnectiCare ID cards do not include Social Security numbers or other financial information, Kann said.