Are the 'viral' agents of MS, ALS and schizophrenia buried in our genome?

What if the missing 'environmental' factor in some of our deadliest neurological diseases were really written in our genome?

source https://www.lifetechnology.com/blogs/life-technology-news-blog/are-the-viral-agents-of-ms-als-and-schizophrenia-buried-in-our-genome