Whooping cough (also known as pertussis) is an infectious, life-threatening respiratory disorder that causes violent, hacking coughing that makes breathing difficult. Annually, there are an estimated 24.1 million cases and about 160,700 deaths worldwide, according to the CDC.

Children, especially non-immunized babies who are 6 months old and below and 11-18-year-olds with diminished immunities experience the following symptoms…