An inactivated gE-negative marker vaccine and an experimental gD-subunit vaccine reduce the incidence of bovine herpesvirus 1 infections in the field.

J.C. Bosch, M.C.M. de Jong, P. Franken, K. Frankena, J.J. Hage, M.J. Kaashoek, M.A. Maris-Veldhuis, J.P.T.M. Noordhuizen, W.H.M. van der Poel, J. Verhoeff, K. Weerdmeester, G.M. Zimmer, J.T. van Oirschot

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Abstract

An inactivated glycoprotein E-negative vaccine and an experimental glycoprotein D-subunit vaccine against bovine herpesvirus 1 (V1) were examined for their effectiveness in a randomized, double-bline, placebo-controlled field trial comprising 130 dairy farms. The use of these marker vaccines enabled us to monitor the incidence of infections in vaccinated populations. The aims of this trial were to evaluate whether these vaccines: (1) reduce the proportion of outbreaks in dairy herds; and (2) reduced virus transmission within dairy herds and to what extent. Vaccination with either of the two vaccines significantly reduced the proportion of herds wherein an outbreak occurred as well as the virus transmission within herds, as compared to placebo-treated herds. The estimated number of secondary cases caused by one infectious animal, expressed as the reproduction ratio R, was for both vaccines significantly >1. This indicates that when BHV1 is introduced into vaccinated herds, major outbreaks may still occur
Original languageEnglish
Pages (from-to)265-271
JournalVaccine
Volume16
DOIs
Publication statusPublished - 1998

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