Chapter 4: Member State or zone free from infection with Brucella abortus, B. melitensis and B. suis as regards kept ovine and caprine animals - Commission Delegated Regulation (EU) 2020/689 of 17 December 2019 supplementing Regulation (EU) 2016/429 of the European Parliament and of the Council as regards rules for surveillance, eradication programmes, and disease-free status for certain listed and emerging diseases (Text with EEA relevance)