. 2019 Feb 22;10:272. doi: 10.3389/fmicb.2019.00272
Copyright © 2019 Klotz, Higgins, Schaubmar, Failing, Leidner, Seifert, Scheufen, Semmler and Ewers.
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FIGURE 1.
Distribution of the prevalence over the 12 months. Numbers of positive animals given in the bars.