Well, then, I am glad it is in the vaccine. Obviously we cannot live with out it.
FTR, I took boron as a supplement during all four of my pregnancies. I am aware that it is a trace mineral that the body needs to build bones, with calcium, phosphorus, and magnesium. I know all about 20 Mule Team Borax as I am old enough to have watched the television show that it sponsored in the early 1960s and use it in my old washing machine.
But just because a substance is a good trace mineral as ingested, eye wash, or laundry detergent does not mean it is a good idea to inject it also.
The human body strives to be healthy, and our bodies survive the many assaults we face on a daily basis in our polluted, modern world. That is why not every person who is injected with various substances keels over ill or dead. But some will. I am not sure the sodium borate would be the same thing used as laundry detergent, eye wash, or the boron I got at the hfs, or if it is the same stuff used in Roach Prufe.