Learning biology in school, I became interested in the fact that there aren't any diseases by prions which are globally infectious (as far as I know), unlike diseases by viruses (ex. COVID-19, SARS etc.) or by bacteria (ex. plague, ...). Why is it?
cf. Here are some my hypothesis
- Prions are not efficient pathogens because they don't have DNAs.
- Such prions are not yet discovered or does not exist.
- There exists lots of people who are immune to such diseases.
Are there any answers to the questions? Or is there any answers?