1. Department of Virology, College of Medicine, University of Ibadan, Ibadan, Nigeria
2. Department of Microbiology, Faculty of Science, Ekiti State University, Ado-Ekiti, Nigeria
3. Department of Science Laboratory Technology, Faculty of Science, Ekiti State University, Ado-Ekiti, Nigeria
4. WHO National Polio Laboratory, University of Ibadan, Ibadan, Nigeria