What are intravenous vaccines?

Answer:
If there were any, they would be vaccines that are administered directly into a vein (intravenous means within the vein) using a needle. But there are no vaccines made for that administration route that I am aware of. Most are either intramuscular (IM, within the muscle), oral, intradermal (within the skin), or intranasal (mists inserted into the nose).
First answer by D4est. Last edit by D4est. Contributor trust: 1252 [recommend contributor recommended]. Question popularity: 1 [recommend question].