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Table 2 Clinical scores in calves on day seven after experimental infection with BRSV

From: A bovine respiratory syncytial virus model with high clinical expression in calves with specific passive immunity

  Group/Calf
  BRSV-Snk BRSV-Dk
Clinical sign A1 A2 A3 B1 B2 B3
General state 1 1 1 0 1 0
Appetite 1 1 1 0 0 0
Abdominal dyspnea 2 2 2 2 2 2
Temperature 0 4 0 0 1 2
Respiratory rate 3 3 3 1 3 0
Lung sounds intensity 2 3 3 0 2 1
Added lung sounds 0 3 2 0 2 1
Nasal discharge 1 2 1 1 1 1
Coughing 2 2 2 0 2 0
Clinical score 25 38 28 9 25 13
  1. Six calves were experimentally infected with virulent BRSV, either passaged in vivo (BRSV-Snk, n = 3, calves A1-3), or in vitro (BRSV-Dk, n = 3, calves B1-3). Clinical signs were recorded daily for seven days, and scores calculated as described in Table 1.