When I got the shots back about 1972 there were 14 of them, 21 if it was a wild animal, one a day. Had to be in subcutaneous fat and when they ran out of that on your belly they did the last few in the thigh. Each shot felt like a blow with a hammer. The stuff was cultured in duck embryo and you got sensitized so they swelled to about the size of golf balls. It was a great two weeks off work! Went to the beach most days after the morning shot. Two lines of golf balls down the abs.