The red-level air quality index (AQI) category—covering values from 151 to 200—means the air is unhealthy for everyone, not ...

Here's what to know about whooping cough amid the growing cases.

The CDC says pertussis, also known as whooping cough, may seem like a common cold at first, but symptoms worsen over time.

Austin Public Health's letter to the Del Valle high school parents told them to look for signs of pertussis and have their ...