In fact, during the first week of May, 43% of baby formula supplies were out of stock across the country, compared to 31% two weeks prior, according to retail pricing data website Datasembly. Many stores have also implemented quotas on how much formula one person can buy at a time, while pediatricians are recommending not to dilute formula (which could be harmful to the kidneys) or switching to other brands. Flashback: Abbott Nutrition ( ABT ), the nation's largest baby formula manufacturer, shuttered its production facility in Sturgis, Michigan, in February following reports of contaminated formula that was linked to the deaths of at least two infants. A voluntary recall was issued for Similac, Alimentum, EleCare and other products as the company implements "corrective actions and enhancements" to resume operations. Following FDA approval, Abbott can resume production at the facility within two weeks and make the product available in about six to eight weeks.