I'm the opposite of a biology expert, but from what I've read, the "miscellaneous non-vaccine compounds" in the solution are adjuvants which make the vaccine mo

I'm the opposite of a biology expert, but from what I've read, the "miscellaneous non-vaccine compounds" in the solution are adjuvants which make the vaccine more effective by provoking the immune system into a response. Without those "non-vaccine compounds" the vaccine itself could be no more effective than a shot of sterile saline - which itself is probably another "non-vaccine compound." Perhaps if you're referring to something else you could spell it out.