The ongoing issues in the supply chain, as well as a recent recall by formula manufacturer Abbott Laboratories, has caused parents to face worsening shortages of infant formula.

According to The Washington Post, the shortage has caused major retailers such as Walmart, Target, CVS and Walgreens to limit their purchases, forcing customers to make multiple trips to the shelves.

In addition to supply chain issues, the shortage has been caused in part by Abbott Nutrition expanding its baby formula recall last month.

The company posted another recall notice announcing it now includes one lot of its Similac PM 60/40 formula.