Follow a group of families as whooping cough finds its way into their midst. Is this a deadly disease, or just a routine but annoying cough? How can you recognize it quickly so early treatment can make a difference? How do doctors make the diagnosis and what role does the health department play in outbreaks? Does the vaccine prevent the spread? Should all grandparents and family members be vaccinated to protect new babies? Learn everything you need to know about this infection.