Seroprevalence and Risk Factors of Chlamydia abortus Infection in Tibetan Sheep in Gansu Province, Northwest China

Table 2

Seroprevalence of Chlamydia  abortus infection in Tibetan sheep in eight herds in two regions in Gansu, China.

Region	Herd numbers	Examined numbers	Positive numbers	Prevalence (%)
Tianzhu	Herd (1)	242	43	17.77
	Herd (2)	216	38	17.60
	Herd (3)	255	31	12.16
	Herd (4)	249	45	18.07
	Total	962	157	16.32
Gannan	Herd (5)	238	46	19.33
	Herd (6)	159	10	6.29
	Herd (7)	224	67	29.91
	Herd (8)	149	43	28.86
	Total	770	166	21.56