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Table 2 Serological results from animals in herds with outbreak of respiratory disease

From: Occurrence and phylogenetic analysis of bovine respiratory syncytial virus in outbreaks of respiratory disease in Norway

Herd size Herd no. Mean age of sampled animals BRSV infection No. pos/sampled BPIV3 infection No. pos/sampled BCoV infection No. pos/sampled Serological detection
13 20 3.9 yrs 5/5 0/5 0/5 BRSV
20 1 2.3 yrs 1/2 0/2 0/2 BRSV
24 21 3.5 yrs 3/3 0/3 0/3 BRSV
27 16 3.0 mo 4/5 0/5 0/5 BRSV
51 6 2.2 mo 1/5 0/5 0/5 BRSV
55 4 1.2 yrs 7/7 0/7 0/7 BRSV
71 7 1.2 yrs 6/7 0/7 0/7 BRSV
74 3 1.7 mo 0/4 0/4 4/4 BCoV
83 11 7.3 mo 3/5 0/5 0/5 BRSV
95 14 3.8 mo 1/3 0/3 0/3 BRSV
136 13 4.8 mo 3/3 0/3 1/3 BRSV/BCoV
171 8 10.5 mo 6/6 0/6 0/6 BRSV
193 18 7.1 mo 4/5 4/5 2/5 BRSV/BPIV3/BCoV
210 10 5.5 mo 5/5 0/5 0/5 BRSV
210 15 3.7 mo 5/5 0/5 1/5 BRSV/BCoV
220 19 2.7 mo 0/5 0/5 1/5 BCoV
250 12 5.7 mo 0/3 2/3 0/3 BPIV3
256 5 1.4 mo 0/5 0/5 0/5 -
265 17 4.7 mo 5/6 2/6 5/6 BRSV/BPIV3/BCoV
300 9 1.6 yrs 5/5 3/5 1/5 BRSV/BPIV3/BCoV
Total    64/94 11/94 15/94  
  1. The herds are listed according to size, i. e. the number of animals in the herds at first sampling. The ratio of animals with acute antibody response against BRSV, BPIV3 and/or BCoV out of investigated animals is shown.
  2. The results are based on detection of antibodies in paired serum samples. Animals were defined as positive for infection if they seroconverted or if the antibody titre increased ≥ 70%. The mean age is at first sampling.