1. SA-MRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice 5700, South Africa
2. Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice 5700, South Africa
3. Department of Microbiology, Obafemi Awolowo University, Ile Ife 234, Osun State, Nigeria
4. GI Microbiology and Biotechnology Unit, Agricultural Research Council, Animal Production Institute, Irene, Pretoria 0062, South Africa
5. Department of Biological Science, Faculty of Agriculture and Technology, North-West University, Mafikeng Campus, Mmabatho 2735, South Africa