| serologic evidence for babesia bigemina infection in wild yak (bos mutus) in qinghai province, china. | piroplasmosis, caused by tick-borne protozoan parasites of the genera theileria and babesia, is one of the most economically important infections of domestic ruminants in china. we evaluated the prevalence of antibodies to babesia bigemina in wild yaks (bos mutus) from qinghai province, china. of 91 samples, 24% had detectable b. bigemina antibodies, and significant differences in prevalence were observed between those older than 5 yr and those younger than 5 yr. we collected 1,679 ticks belongi ... | 2015 | 26267460 |