General Mills’ flour recall just got bigger.
The food giant had announced the original recall at the end of May after its flour had been connected to an outbreak of E. coli. It had initially included certain sizes of Gold Medal, Wondra, and Signature Kitchens brand flour that had been produced between Nov. 4, 2015 and Dec. 4, 2015. The company announced in a press release on Monday that it is extending the affected production dates included in the recall through February 10, 2016.
This comes after the company confirmed four new illnesses that could be related to the recall. The illnesses have been linked to General Mills (GIS) customers who have eaten or improperly handled raw dough or batter made with the affected products. “At this time, it is unknown if we are experiencing a higher prevalence of E. coli in flour than normal, if this is an issue isolated to General Mills’ flour, or if this is an issue across the flour industry,” the company wrote in the press release.
General Mills reminds its customers that flour is made from wheat grown outside, where it can be exposed to certain kinds of bacteria. The cooking process can help kill bacteria, so you shouldn’t eat anything that contains raw flour.
This is the second time that the company is expanding the recall since it was initiated in May. Earlier this month General Mills announced that it was recalling three flavors of Betty Crocker cake mix that were made with Wondra flour that had been named in the original recall.
A spokesperson for General Mills told Fortune that retailers have been notified, and the additional flour will quickly be removed from shelves.