Serological Investigations of Bluetongue Virus (BTV) among Sheep and Goats in Kassala State, Eastern Sudan

Table 1

The overall seroprevalence of BTV in different geographic areas in Kassala state.

Section	Ecological characteristics	Total of tested	Positive (prevalence (%))	Chi square	df	value
East	Savanna	260	238 (91.5)	17.102	5	0.004
West	Rich savanna	144	139 (96.5)
North	Savanna	161	146 (90.7)
N. East	Savanna	161	136 (84.5)
South	Rich savanna	56	52 (92.9)
Center	Rich savanna	27	27 (100)

value ≤ 0.05 is significant. : degree of freedom.