It would be a good idea to be careful of the meat you eat while having your summer barbecue. I read Colm's book: "Brain Trust- The Hidden Connection Between Mad Cow Disease and Misdiagnosed Alzheimer's Disease" a few years ago. It had a significant impact on my life. Prion diseases are more prominent than most people know and affect many different animals as well as humans. You will be enlightened after watching this video. It is good to know since often you will not be told the truth. Hey, I eat meat (although less and less every year) but it is now strictly grass fed organic as a general rule of thumb.
Want to know more: I review Colm's work and discuss Prion Disease in my book Go Here