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. 2022 Feb 10;17(2):e0247213. doi: 10.1371/journal.pone.0247213

Table 10. Relative risk of treatment failure for BRD diagnostic test methods from upper respiratory tract samples in high-risk feeder heifers.

Bacterial Isolates on Day-0 RRTF 95% Confidence Interval
M. haemolytica 1.23 1.00–1.51
P. multocida 1.03 .81–1.30
H. somni .81 .26–2.52
M. bovis .73 .28–1.89
Resistant Isolates on Day-0
M. haemolytica 1.02 .25–4.13
P. multocida NA NA
Susceptible Isolates on Day-0
M. haemolytica 1.51 .59–3.89
P. multocida NA NA
Bacterial Isolates at 1st BRD-treatment
M. haemolytica .89 .73–1.09
P. multocida 1.01 .72–1.42
H. somni 1.01 .79–1.54
M. bovis 1.08 .90–1.30
Resistant Isolates at 1st BRD-treatment
M. haemolytica .75 .42–1.35
P. multocida 1.12 .59–2.16
Susceptible Isolates at 1st BRD-treatment
M. haemolytica NA NA
P. multocida .69 .32–1.48
Viral PCR at 1st BRD-treatment
BVDV 1.39 1.17–1.66
bPIV-3 1.26 1.06–1.51
BRSV 1.35 1.11–1.63
BVH-1 1.52 1.25–1.83
BVDV (-) & (Resistant) M. haemolytica .62 .34–1.4
BVDV (+) & (Resistant) M. haemolytica 1.30 .32–5.38
bPIV-3 (-) & (Resistant) M. haemolytica 1.38 .27–6.94
bPIV-3 (+) & (Resistant) M. haemolytica NA NA
BRSV (-) & (Resistant) M. haemolytica NA NA
BRSV (+) & (Resistant) M. haemolytica 1.09 .40–2.97
BHV-1 (-) & (Resistant) M. haemolytica .79 .38–1.66
BVDV (-) & (Resistant) P. multocida .62 .34–1.4
BVDV (+) & (Resistant) P. multocida 1.30 .32–5.38
bPIV-3 (-) & (Resistant) P. multocida 1.38 .27–6.94
bPIV-3 (+) & (Resistant) P. multocida NA NA
BRSV (-) & (Resistant) P. multocida NA NA
BRSV (+) & (Resistant) P. multocida 1.09 .40–2.97
BHV-1 (-) & (Resistant) P. multocida .79 .38–1.66
BHV-1 (+) & (Resistant) P. multocida NA NA
BVDV (-) & (Susceptible) P. multocida .58 .24–1.39
BVDV (+) & (Susceptible) P. multocida NA NA
bPIV-3 (-) & (Susceptible) P. multocida 1.08 .40–2.92
bPIV-3 (+) & (Susceptible) P. multocida .58 .20–1.63
BRSV (-) & (Susceptible) P. multocida .59 .28–1.23
BRSV (+) & (Susceptible) P. multocida NA NA
BHV-1 (-) & (Susceptible) P. multocida .73 .32–1.64
BHV-1 (+) & (Susceptible) P. multocida NA NA