cohort
as defined in Regulation (EC) No 999/2001 of the European Parliament and of the Council of 22…
a group of bovine animals which were either born in the same herd as, and within 12 months preceding or following the birth of, the affected cattle or reared together with the affected animal at any time during the first year of their life and which may have consumed the same feed as that which the affected animal consumed during the first year of its life