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Table 1 Description of IBR status of the investigated farms according with the presence or absence of antibodies against the glycoprotein E (gE). Thirty involved farms (unknown status) have been never investigated for BoHV1 (Bovine herpesvirus 1) antibodies prior the present study

From: Field application of an indirect gE ELISA on pooled milk samples for the control of IBR in free and marker vaccinated dairy herds

Farms

May 20151

November 20162

gE-positive

152

97

gE-negative MV

98

156

Unknown status

30

0

Total

280

253

  1. aMarker-vaccinated farms. The number of farms belonging to each group at the beginning (1) and at the end (2) of the study is reported