Being one of the few diseases that we’ve effectively eliminated through the usage of vaccines, this dataset of the number of polio cases by year caught my eye. Graphs that focus on a disease’s number of cases aren’t anything new, but the fact that polio has been nearly eradicated turns the dataset into a story with an end. Most disease infection graphs go on forever, no distinct end or beginning due to the continued existence of the disease. Polio had many major outbreaks in the first half of the 20th century, giving a beginning. With the introduction of the polio vaccine, the cases drop off sharply to the point that they reach zero – the graph’s end. This graph really drives home how instrumental vaccines are in eliminating infectious diseases from our world.