Live vaccine for bovine babesiosis

Drug – bio-affecting and body treating compositions – Whole live micro-organism – cell – or virus containing – Genetically modified micro-organism – cell – or virus

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424 88, 435258, A61K 39018, C12N 110

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active

047627115

ABSTRACT:
A live vaccine for bovine babesiosis comprises viable bovine erythrocytes parasitized with a cloned population of Babesia bovis, the clone strain being fast-growing, avirulent, and producing a mild but immunizing infection when administered. The vaccine is free of slow-growing virulent B. bovis. The clone strain used in the vaccine is prepared from a natural mixture of virulent and avirulent babesia by progressive dilution culturing to obtain cultures containing single parasites, propagating the single parasites under favorable conditions for growth, and selecting a fast-growing avirulent clone line for either in vitro or in vivo propagation to prepare the vaccines.

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Levy et al., Cultivation of Babesia, pp. 207-223, In Ristic and Kreier, Babesiosis, Academic Press, Inc, N.Y., 1981.
Erp et al., Am. J. Trop. Med. Ayg., vol. 27, pp. 1061-1064, 1978.
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