Tiger Brands issued the recall of its Snax product after detecting the bacteria at its Pretoria facility.
The company had, since the announcement made by Health Minister Dr Aaron Motsoaledi on March 4, closed operations at its Enterprise factories in Polokwane and Germiston.
Nevashnee Naicker, Tiger Brands spokesperson, said no one had informed or instructed them to close their Pretoria operations down. The company did so voluntarily, she said.
Samples taken in for testing four weeks ago by their team of local and international scientific experts tested positive for a strain of the listeria disease.