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Article History

Received: 23 March 2021

Accepted: 20 May 2021

First Online: 25 August 2021

Change Date: 20 September 2021

Change Type: Update

Change Details: We have interchanged references 26 and 27.

Declarations

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: All animal experiments or samplings were conducted by veterinarians and in accordance with the principles outlined in the European Convention for the Protection of Vertebrate Animals Used for Experimental and Other Scientific Purposes and the German Animal Protection Law (Tierschutzgesetz). The protocols for the animal experiments, from which sera used for characterization of immunogens originate, were either approved by the Committee on Animal Experiments of the Lower Saxonian State Office for Consumer Protection and Food Safety (Niedersächsisches Landesamt für Verbraucherschutz und Lebensmittelsicherheit, LAVES under the permit number 87A044, 509.6-42502-04/829; 33.14-42502-04-12/0965; 33.12-42502-04-16/2305A) or the Landesdirektion Sachsen (permit no. TVV14/15; TVV26/15; N01/16; TVV11/16; TVV28/16; TVV37/17), which included approval through the registered committee for animal experiments. The collection of blood samples from pigs was approved by the Landesdirektion Sachsen (permit no. TVV40/18 and A09/19, respectively). The animal experiment of this study was approved by the Saxony Regional Office (permit no. TVV57/18), which includes approval through the registered committee for animal experiments.

: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Ceva Innovation Center GmbH is a company developing veterinary vaccines. VF and BJ are employees of Ceva Innovation Center GmbH. Furthermore, research of CGB and GA is funded by Ceva Innovation Center GmbH.