Ethics statement
The authors confirm adherence with the journal’s ethical statements as noted in the journal’s authors guideline page. Blood samples listed in supporting table 1 came from animal experiments conducted at the FLI, which were performed in accordance with EU Directive 2010/63/EC and approved by the competent authority (Landesamt für Landwirtschaft, Lebensmittelsicherheit und Fischerei (LALLF) Mecklenburg-Vorpommern).