Bovine tropical theileriosis (BTT) is a serious hindrance in the cattle upgradation programme using the exotic germplasm. There is a wide range of variations in the pathobiology alongside clinical symptoms of the animals suffering from BTT. The present paper communicates the first report about the transplacental transmission of T. annulata in a cross bred 2-day old calf. T. sergenti, T. lestoquardi and T. equi are known to undergo transplacental transmission, but baring a single citation in literature, there are no records about the transplacental transmission of T. annulata.
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