http://www.fda.gov/fdac/features/2005/305_cough.html
U.S. Food and Drug Administration
With the number of reported outbreaks of whooping cough (pertussis) on the rise in the United States, the Centers for Disease Control and Prevention (CDC) says there is a need to protect adolescents and adults, as well as children, against this highly contagious respiratory infection. Learn why prevention is key.