According to one German Scientist who has made research on Eritreans who fed on the sheep, the virus affected mutton is highly deteriorated the peoples cerebrum. There is a suspect that the  Adiabeto case might be caused in relation to this mutton virus.

Eritrea takes stranded ship sheep
Monday, October 27, 2003 Posted: 11:02 PM EST (0402 GMT)

 ASMARA, Eritrea (Reuters) -- African nation Eritrea says 52,000 Australian sheep that spent months at sea after being rejected by dozens of countries would be slaughtered over the next two months and eaten.

Over 5,000 sheep died during their time on board what some Australian media dubbed the "ship of death" as more than 20 states turned them away on health grounds.The animals have been herded ashore in Eritrea after the impoverished African country agreed to take them as a gift.