Frozen pizzas sold at Walmart and Aldi are being recalled due to concerns that they may be contaminated with salmonella, as well as other items. On April 30, the U.S. Department of Agriculture’s Food Safety and Inspection Services issued a public health alert for meat and poultry products containing FDA-regulated ingredients that may be contaminated with Salmonella.  Customers who have purchased the recalled products are urged not to consume them, even if they are cooked…