Neugut R H, Neugut A I, Kahana E, Stein Z, Alter M
Neurology. 1979 Feb;29(2):225-31. doi: 10.1212/wnl.29.2.225.
Creutzfeldt-Jakob disease was studied among Libyan-born Israelis, in whom the disease appears with unusual frequency. Interviews with relatives of deceased victims revealed statistically significant clustering within families. The results suggest either a common source of exposure or a genetic influence on susceptibility to the virus.