It was a cold January in 1925 in Nome, Alaska. The town was cut off from the rest of the world due to heavy snow.
On the 20th of that month, Dr. Welch 1 a sick boy, Billy, and knew he had diphtheria, a deadly infectious(传染的) disease mainly affecting children. The children of Nome would be 2 if it struck the town. Dr. Welch needed medicine as soon as possible to stop other kids from getting sick. 3 , the closest supply was over 1,000 miles away, in Anchorage.
