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Article History

Received: 25 March 2024

Accepted: 21 October 2024

First Online: 5 November 2024

Declarations

:

: The data and isolates on which this study is based were collected from calves at farm visits made by the Swedish animal health services in 1997–2000. The farm visits, including sampling of calves, were part of routine work in managing outbreaks of BRD on farms affiliated with the organisation. Hence, this is not an experimental study and ethics approval and consent to participate are therefore not relevant.

: Not applicable.

: Data have not been published previously.

: The authors declare that they have no competing interests.