**Author details**

Anyebe Onoja1 \* and Oluwaseyi Ajagbe2

1 Department of Virology, College of Medicine, University of Ibadan, Nigeria

2 Faculty of Veterinary Medicine, University of Abuja, Nigeria

\*Address all correspondence to: bernardonoja@yahoo.com

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
