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, 73 (2-3), 195-205

Diva Vaccines That Reduce Virus Transmission


Diva Vaccines That Reduce Virus Transmission

J T van Oirschot. J Biotechnol.


This brief review deals with the effect of diva (Differentiating Infected from VAccinated individuals) vaccines (also termed marker vaccines) on transmission of herpesviruses and pestiviruses in swine and cattle. Pseudorabies and bovine herpesvirus 1 diva vaccines have been demonstrated to reduce transmission of wild-type virus in populations of pigs and cattle in the laboratory as well as in the field. A subunit diva vaccine based on the immunodominant E2 protein of classical swine fever virus that is expressed in the baculovirus system may reduce transmission of wild-type virus among pigs and also transmission from mother to foetuses. A similar diva vaccine against bovine virus diarrhoea infections protected sheep against transplacental transmission of antigenically homologous wild-type virus. Diva vaccines along with their companion diagnostic tests can play a role in control of infections, ultimately leading to eradication of viruses.

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