The dates refer to the year when the animal was first suspected of harbouring the disease, and the figures are for animals finally confirmed as having the disease.
Recent figures are still provisional.
Whether the case occurred because the bans have been insufficiently enforced, or because maternal transmission is perpetuating the disease or because there are other agents which are not yet controlled, is not known. Scrapie Data on scrapie in sheep and goats have been collected since the disease became notifiable 1993. Not all cases were confirmed until compulsory slaughter legislation was introduced in 1998. Interpretation of trends may therefore be unreliable. 30 FSE Feline spongiform encephalopathy has been reported since 1990.