1. School of Biochemistry, Genetics and Microbiology, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban, Republic of South Africa
2. Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria
3. Robert Koch Institute, 38855 Wernigerode, Germany
4. Department of Microbiology, Faculty of Medicine, Kuwait University, Kuwait