[1] University of Pretoria,Phytomedicine Programme, Department of Paraclinical Sciences
[2] National Veterinary Research Institute,Regional Laboratory for Animal Influenzas and other Transboundary Animal Diseases
[3] University of Khartoum,Department of Food Science and Technology, Faculty of Agriculture
[4] University of Pretoria,Department of Medical Microbiology, Faculty of Health Sciences
[5] National Health Laboratory Service,undefined
[6] Tshwane Academic Division,undefined