In an NBC News data investigation of 31 states, about 70% of counties and jurisdictions fell below the target vaccination ...

Pertussis, also known as whooping cough, is a vaccination-preventable illness that has been on the rise in the United States.

Over the last few years, the U.S. has experienced a troubling resurgence of pertussis, also known as whooping cough.

Pertussis, also known as whooping cough, is a vaccination-preventable illness that has been on the rise in the United States.

Cough drops are available over the counter, but they can be packed with sugar and contain ingredients with potentially ...