In addition, because of ethnic clashes in the Taraba and Benue states of Nigeria since two years ago, there is a concentration of pastoral refugees in Abongshie, Ako, Nkambe, Mayo-Binka, Sabong Gari, and Nwa. Because of the relative peace that reigns in Cameroon many Nigerian business men also troop into the country through these routes. Long-distant truck drivers with their characteristic multiple partners on settlements along these routes are common. Hence, these are high HIV/AIDS prone regions. Trans-border (Cameroon-Nigeria and vice-versa) transport workers on Rivers Donga and Mantung are also high risk groups.