1. Department of Medical Microbiology, University of Nigeria Teaching Hospital Ituku- Ozalla, Enugu State, Nigeria
2. Department of Medical Microbiology, Faculty of Medical Sciences, College of Medicine, University of Nigeria, Ituku-Ozalla Campus, Enugu State, Nigeria
3. Department of Medical Microbiology, Lagos University Teaching Hospital, Lagos State, Nigeria
4. Laboratory of Medical Microbiology, Vaccine and Infectious Disease Institute, (VAXINFECTIO), Faculty of Medicine and Health Science, University of Antwerp, Antwerp, Belgium, Europe