We currently have a pertussis (whooping cough) epidemic occurring in Washington State. Infants under 6 months of age are particularly vulnerable but anyone, even if you are fully vaccinated, could potentially contract the disease and spread it.
(Is it really an epidemic? Yes: an epidemic (of a disease) affects many persons at the same time, and spreading from person to person in a locality where the disease is not permanently prevalent.)
Pertussis (whooping cough) is a very contagious disease caused by a type of bacteria called Bordetella pertussis. Among vaccine-preventable diseases, pertussis is one of the most commonly occurring ones in the United States (CDC).
What are the symptoms of whooping cough?
The early signs for pertussis are ...