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Table 5 Yearly risk of introduction of cattle diseases

From: Risk assessment as a tool for improving external biosecurity at farm level

Scenario/Model Biosecurity measures Dairy herd 180 milking cows Calf fattening herd 120 calves
BRSV   % %
 Baseline No 100 (99.96–100) 98.85 (74.86–100)
Yes 99.99 (91.63–100) 65.70 (31.86–89.43)
 Low-risk No 75.82 (19.09–99.21) 61.00 (13.37–96.05)
Yes 32.99 (5.83–76.20) 27.30 (4.72–66.55)
BCoV
 Baseline No 100 (100–100) 99.86 (90.90–100)
  Yes 100 (99.63–100) 85.35 (54.71–97.67)
 Low-risk No 80.85 (22.91–99.54) 69.86 (17.30–98.15)
  Yes 39.12 (7.57–80.60) 38.50 (7.36–79.44)
  1. Model outputs for bovine respiratory syncytial virus (BRSV) and bovine coronavirus (BCoV) in two example cattle herds, as calculated in a stochastic model, based on two scenarios (baseline and low-risk contact patterns, respectively), with and without application of biosecurity (quarantine for new animals, protective clothes for visitors, hygiene lock for loading/unloading, isolated deadstock collection area). Median result and 5th to 95th percentiles (in brackets) are given