Sugar Cube Polio Vaccines I remember this. The cubes were lined up on a white enamel hospital tray. Each white cube of sugar had a pink drop soaked into the top. You walked by in line, took a cube, put it in our mouth and walked to the door. At the door out you had to show your empty mouth to the School Nurse or one of the Teachers.

Sugar Cube Polio Vaccines I remember this. The cubes were lined up on a white enamel hospital tray. Each white cube of sugar had a pink drop soaked into the top. You walked by in line, took a cube, put it in our mouth and walked to the door. At the door out you had to show your empty mouth to the School Nurse or one of the Teachers.