Fonterra CEO Theo Spierings says the risk of anyone contracting botulism from contaminated whey protein powder has ended. Spierings says 18 metric tons of potentially contaminated whey protein concentrate that had been turned into 2,300 tons of infant formula has been contained in warehouses or recalled. Fonterra announced hundreds of tons of infant formula, sports drinks and other products could have been contaminated, but only infant formulas were recalled because the manufacturing process would have killed bacteria in other products. Spierings says the contamination occurred as a result of dirty pipes in a Fonterra factory in New Zealand's Waikato district.