1Department of Microbiology, Faculty of Science, University of Uyo, P.M.B. 1017, Uyo, Akwa Ibom State, Nigeria
2Department of Medical Microbiology and Parasitology, Faculty of Basic Clinical Sciences, University of Uyo, Akwa Ibom State, Nigeria
3Department of Microbiology, Faculty of Biological Sciences, Abia State University, Uturu, Abia State, Nigeria