International Journal of Communication and Public Relation ISSN 2520-7989 (Online) Vol.8, Issue 2, No. 4, pp 40-54, 2023 www.iprjb.org 1 The Influence of Communication Messages on Adoption of Contagious Bovine Pleuropneumonia (CBPP) Vaccine among Arid and Semi-Arid Lands (ASAL) Pastoralists in Kenya Virginia Wangari Ndungu, Professor Hellen K. Mberia, Dr Kyalo Wa Ngula and Dr Joseph Othieno