Funding for this research was provided by:
Agricultural Research Service (CRIS# 3040-32000-034-00D)
Received: 10 December 2019
Accepted: 29 July 2020
First Online: 12 August 2020
Ethics approval and consent to participate
: The <i>M. haemlytica</i> strains used in this study were part of our pre-existing KSU-USMARC and Zoetis collections first described in [CitationRef removed]. The use of cattle for sampling that produced our KSU-USMARC collection was approved by the Kansas State University Institutional Animal Care and Use Committee. The strains comprising our Zoetis collection were donated to Zoetis by diagnostic labs and were used with permission in this study by the corresponding diagnostic lab and Zoetis.
: Not applicable.
: RWM and MTS own shares in and are employees of Zoetis, Inc. All other authors declare that they have no competing interests<b>.</b>