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. 2020 Jun 2;32(4):513–526. doi: 10.1177/1040638720918561

Table 2.

Study 1 (comparison of multiple bovine coronavirus (BoCV) strains based on clinical presentations).

BoCV challenge strain No. of calves with pyrexia Mean highest temperature (°C) Virus isolation Average antibody level on day 10* Tracheal and bronchial gross lesions
Nasal swab Rectal swab
OK AN5 3/3 39.6 ± 0.2 1 calf/d 3–7
1 calf/d 3–6
1 calf/d 4–7		 2 calves/d 3–7
1 calf/d 3–6		 7.5 2/3
OK 43 3/3 39.8 ± 0.1 2 calves/d 3–7
1 calf/d 3–6		 2 calves/d 3–7
1 calf/d 3–6		 6.6 0/3
OK 834 2/3 40.2 ± 0.3 2 calves/d 3–7
1 calf/d 3–6		 2 calves/d 3–7
1 calf/d 3–6		 6.6 2/3
NVSL 1/3 39.5 ± 0.2 1 calf/d 10 1 calf/d 7 5.9 0/3
OK 1776 2/3† 39.5 ± 0.1 3 calves/d 3–7 2 calves/d 3–7
1 calf/d 3–6		 7.7 2/3
Control 0/2 No fever detected None None No antibodies detected 0/2
*

Reported as reciprocal of log base 2.

†

One animal disgorged the temperature probe.