*Y.U. Dabai1, A.H. Kawo2 and R.M. Aliyu3
1Department of Public Health And Preventive Medicine, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto, Sokoto State, Nigeria.
2Department of Veterinary Microbiology, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto, Sokoto State, Nigeria.
3Department of microbiology, Faculty of Science, Bayero University, Kano, Kano State, Nigeria.
