Minutus

I know that title didn't make much sense. I just found out from someone I went
to gradeschool with that the 4th grade teacher tested all of our blood for
blood type using the same needle. He would stick the needle in a cork and then
the cork was in some alcohol. Is it possible that something might have passed
into all of our blood using this method?

Other than major blood transfer infection ones like Hepatitis C and, if after 1981, HIV. You may want to verify your current blood type if you're only going on what the 4th grade teacher tested you as. As I reported here a couple of years ago, I was tested by a reputable lab as type AB- blood before any homeopathic treatment and now retest as type B blood.
Susan