Cross-sectional study was conducted in Jijiga and Shinille Zones of Somali Regional State fromrnOctober 2008 to April 2009 to determine seroprevalence and associated risk factors. A multistagernsampling was used in pastoral and agropastoralsystem. A total of (n=616) goats, (n=202) sheep,rn(n=110) cattle and (n=94) camel sera were collected for serological study. questionary surveyrnwas conducted in pastoral and agro-pastoral system. The seroprevalence of PPR in goats andrnsheep was 25.6% and 14.4% in the study area respectively. The seroprevalence was lower inrncamels and cattle, which was 8.5% and 6.63% respectively. Goats were found to be morernsusceptible than sheep, which was found to be statistically significant (p=O.OOO). However nornsignificant difference was observed between cattle and camel (P=0.558). Seroprevalence of goatsrnbetween Shinille Zone (pastoral) and Jijiga Zone (agro-pastoral) production system showedrn44.09% and 18.9% in goats, 30.01% and 5.42 in sheep respectively. Sero prevalence increasedrnfrom 21.7%% to 28.9%%% in goats and from 8.1 %to 20.4%in sheep from young to adults agernrespectively. There was significant difference between age groups in seroprevalence of both goatsrn(p=0.04) and of sheep (0.013). In case of cattle (p=0.062) and camel (p=0.249) statistically nornsignificance difference was observed between age groups in seroprevalence. Regarding sex,rn26.4%, and 25.5% was found in goats (p=0.851), 15.6% and 14% in sheep's 8% and 5 %( p=O.rn795) in cattle (p=0.488) and8.2% and 9.5% in camel (p=0.095) in male and female respectively.rnThere was statistically no significant difference between sexes in all species. According to thernrespondent the number of goats affected by CCPP (Sunbub) and PPR (Kollere) was 32.8%,rn21.4% and 25.7%, 14.3% in Shinille and Jijiga Zone respectively. However more goats arernaffected by GIT parasite in Jijiga (40%) than Shinille zone (21.4%). Regarding susceptibility byrnage 64.28% and 60.7% of the respondent replied that young goats and sheep were morernsusceptible than adult animals. However, no response (0%) was made indicating susceptibility ofrngoats and sheep less than 6 months of age.rnKey words: goat, sheep, cattle, camel, , cELISA, Peste des petits ruminants, Seroprevalence,rnRisk factors, Jijiga Zone, Shinile Zone.