Both this result and the preceding paper are also entirely consistent with the hypotheses that:

1) People who are susceptible to vCJD are more susceptible to AD

2) The (cellular) stress caused by vCJD increases susceptibility for AD

3) People who have had brain surgery (a traumatic and stressful experience in terms of brain swelling) are more susceptible to AD

All three of which would be entirely inline with the fields' current way of thinking about AD, proteostasis, CBI etc. Which is not to say I actually don't think that there is a transmissible element, but I think we should avoid jumping to conclusions...