The mutated strain, known as subclade K, is causing a surge in cases in the United Kingdom, Canada, and Japan. Here's what to ...

Rates of pertussis, also known as whooping cough, are surging in Florida, California, Texas and other states. The outbreaks are fueled by falling vaccination rates, fading immunity and delays in ...

Many think it's a dangerous ploy by the tobacco industry. But some say, with millions of deaths each year attributed to ...