|
|
| |
| Some Epidemiological Studies of Schistosoma bovis Infection in Cattle in East Darfur State, Sudan |
A.E. Bashar, M. Y. Elshahir and A.A. Mohammed
|
Abstract:
Schistosomiasis is a snail-borne trematode infection in man and animals in tropical and subtropical countries. It is an economically important disease caused by several Schistosoma species and results in economic losses through mortality and morbidity from severe infection and meat condemnation. This study was conducted to determine the magnitude of Schistosoma bovis and the distribution of its intermediate host in East Darfur State during January, 2015 to December, 2015. Simple random sampling method was used to select the faecal samples from Eldaein ,Bahr-el-Arab and Abu Gabra Localities, the carcasses in Eldaein abattoir and the snails' samples from Bahr-el-Arab River. Schistosoma eggs were identified using sedimentation method of faecal samples and light microscopy under X40. The snails and adult Schistosoma worms in liver and mesenteric veins of the carcasses were visually examined and identified during the survey period, giving overall prevalence of 1.46 %, and 1.83% in the faecal samples and slaughtered cattle respectively. The infection rate was 0%, 1.90% and 1.28%, in Eldaein, Bahr-el- Arab and Abu Gabra localities respectively. The sex-specific prevalence was 1.96% in male. and 0.86% in female. The study revealed that the infection rate was higher (1.89%) in calves 2-4 years old compared with other age groups .The autumn season showed the highest rate of infection among other seasons and reached 16. (2.24%), while it was (1.46%) in summer and (0.45%) in winter. The result showed the presence of the intermediate host in and surrounding stagnant water ponds and swamps and other natural water bodies. The study concluded that Schistosoma bovis and its intermediate host prevalent in the study area and the co- existence of different intermediate hosts for other Schistosoma spp and dependence of humans and their livestock on the same water resources in the study area may lead to development of zoonotic hybrid schistosomes, which constitute health hazards to animals and humans, hence the necessity for coordinated preventive and control measures.
|
|
|
| | |