*4.3. Statistical Analyses*

Data from plate culture and Legiolert testing were statistically analyzed by using Student's *t*-test and with relative di fference according to ISO 17994:2014 [22].

**Author Contributions:** Conceptualization, M.L.R.; Data curation, M.S., M.B., S.C., M.A.B.S. and M.A.N.L.; Formal analysis, M.S., M.B., A.G. and A.B.; Investigation, M.B., A.G., S.C., L.G., M.M., M.A.B.S., C.M.Z., L.C. and M.A.N.L.; Data analysis, A.B.; Supervision, M.L.R. and M.S.; Writing–original draft, M.S.; Writing–review & editing, M.L.R. and M.C.R. All authors have read and agreed to the published version of the manuscript.

**Funding:** This work was supported by IDEXX Laboratories, Inc. (ISS-IDEXX gran<sup>t</sup> N.W92)\_.

**Conflicts of Interest:** The authors declare no conflict of interest. The sponsors had no role in the design, execution, interpretation or writing of the study.
