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. 2020 Aug 19;263:105532. doi: 10.1016/j.tvjl.2020.105532

Table 3.

Incidence of bovine respiratory disease cases in the two vaccine groups.

Vaccine group Number of
 Incidence ratea
Calf-days at risk Cases
Vaccine A 25,538 15 0.59
Vaccine B 26,031 23 0.88
Total 51,569 38 0.74
a

Per 1000 calf-days at risk.