Virtually all hospitalized Covid patients are unvaccinated
Granted, this article about how nearly all hospitalized COVID-19 patients are unvaccinated contains no stats, the anecdotes they give are from hospital administrators who saw what things looked like at the worst and are now seeing the improvement.
So you want to write a book?
Ed2592 Press has a mini-book online So You Want to Write a Book that covers their Publishing process. It’s nice that they provide this sort of documentation for their authors. My Publishing For Tech book touches a bit on the difference between working with a traditional publisher and being an indie.