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. 2020 Mar 13;82(5):607–614. doi: 10.1292/jvms.19-0634

Table 3. Numbers of persistently infected (PI) cattle to identify and remove from infected herds in the regional survey.

Factor detected No. of positive farms No. of farms with PI cattle No. of PI cattle
Total Cows Calves
Viral RNA 3 3 4 3 1
Antibody 10 1 3 0 3

Total 13 4 7 3 4

RNA=ribonucleic acid.