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Table 4 Multivariable results for Model 2: within-flock R 0 being below unity vs. flock attributes.

From: Evaluating the control of HPAIV H5N1 in Vietnam: virus transmission within infected flocks reported before and after vaccination

Variable

OR (95%CI)

P

Flock Size (Ref: <50 head)

  

>50-500 head

0.202 (0.115,0.355)

<0.001

>500-1,500 head

0.134 (0.067,0.269)

<0.001

>1,500 head

0.209 (0.094,0.464)

<0.001

Epidemic wave (Ref: Period I)

  

Period II

3.114 (1.785,5.432)

<0.001

  1. OR: Odds Ratio; SE: Standard Error; CI: Confidence Interval