Smallpox vax injection, usually left shoulder resulted in a circular scar due the inflamation the vax caused at the site. Tuberculosis Vax was way worse with swelling and a large pustule generating at the wound site.
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.
Smallpox vax injection, usually left shoulder resulted in a circular scar due the inflamation the vax caused at the site. Tuberculosis Vax was way worse with swelling and a large pustule generating at the wound site.
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.
Veins? No vaccine is administered intravenously.
Have you tried reading a book or article about it?
You mean STD vaccinations aren't administered intrapenisly?
"Drain the main vein" doesn't mean it's an actual vein.
It was a scratch type vaccination, no needles. Pretty much the same way it had been done since Jenner in the 1770s.
They stabbed up a patch of skin .... that's why.