No massive spread of pseudorabies virus in vaccinated sow herds.

A Van Nes,J A Stegeman,M C M De Jong,W L A Loeffen,T G Kimman,J H M Verheijden

VETERINARY MICROBIOLOGY（1997）

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摘要

In this study, we quantified transmission of PRV in 99 sow herds in which the sows were vaccinated three times a year with strain 783 O/W and found that the reproduction ratio R was 0.66, which is significantly below one. This implies that massive spread of PRV cannot occur in such herds. (C) 1997 Elsevier Science B.V.

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pseudorabies virus,vaccination,sow herds,transmission,reproduction ratio,eradication

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