Exploring preventive factors against insufficient antibody positivity rate for foot-and-mouth disease in pig farms in South Korea: a preliminary ecological study.

In the multivariate analysis, the results showed a trend of a 19.7% annual decrease (OR and 95% CI were 0.803 [0.721–0.893] and 0.668 [0.586–0.759] for the models using the threshold median and 3 rd quantile of the incidence, respectively).

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In addition, the associations with the other two factors were weakly significant.

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