4 How come the smallpox vaccine that older school classes, just before mine, that had this odd scar on the shoulder.. that type of injection wasn't like how it's ususally, since.. where it goes in your vein or something. This was more like the movies with this puff in there, and no veins. (media.scored.co) posted 59 days ago by newfunturistic 59 days ago by newfunturistic +5 / -1 6 comments share 6 comments share save hide report block hide replies
The picture above is of a jet injection vaccine which is different, and doesn't leave the scar you're thinking of. Like the parent commenter said here, the round scar is usually from intra-dermal vaccine administration -- usually for smallpox or TB.