prions

The coronavirus pandemic has spawned an equally concerning mis- and disinformation pandemic. The latest myth is that mRNA vaccines may trigger prion diseases like Alzheimer's.
Prions are the smallest and possibly the most dangerous of all infectious pathogens. They are also unique in that they contain no genetic material at all — just proteins. But as guest writer Steve Schow describes, those proteins can do some horrible things if they get into your brain.