"Dog and Cat Vaccines are Not Harmless Preventative Medicine" by Dr Karen Becker.
She talks about vaccinosis, I thought it was interesting and others might like to read/watch. She links vaccines to many diseases ferret owners either battle with or in the same family as common ferret cancers/diseases.
Ferrets: Contessa Kitties: Watson, Oskar DIP Sinnead, Vincent, Boris, Zeus and Athena, Willow, Mr. Frodo, Indie, Lucrezia, Judge, Odin, Miss Emily, Suki, Cody, Aristotle, Butterscotch, Frankenfurter. RIP Herne, Ligeia, and Mr. Stubbs