Which of these should not be included in a summary of this article?
After a vaccine came out in the 1940s, cases of whooping cough began to disappear.
In the past several years, the number of whooping cough cases has been on the rise for both children and adults.
Before the 1940s, whooping cough caused hundreds of thousands of illnesses and many deaths each year.
Children with whooping cough may turn red or purple as they gasp for breath while coughing.