If cockroaches completely gross you out, then look away.
But if you've admired, even a tiny bit, the adaptations that help them thrive among us, I've got a video for you. It will help you develop a whole new appreciation for how these critters stay a step ahead of humans wielding brooms, rolled-up newspapers and anything else that's handy and can be used for swatting.
Infections with the bacterium Clostridium difficile hit record numbers in recent years. Now there's evidence the hard-to-treat infections are becoming a problem for children.
The infections often strike the elderly, especially those who've been taking antibiotics that clear out competing bacteria in people's intestines. People sickened by the bug have persistent diarrhea that can, in severe cases, lead to dehydration.
When it comes to hepatitis C, things that happened to baby boomers back in the day can make all the difference.
One in 30 baby boomers is infected with virus, says the Centers for Disease Control and Prevention. And most of them don't know it. So, the CDC is moving ahead with a proposal that all baby boomers (born between 1945 and 1965) get a blood test to check for the virus.
The current guidelines call for testing when someone has known risk factors.
Months after safety advocates embraced wearing helmets during tornadoes — the Centers for Disease Control and Prevention has issued guidelines on the practice. The CDC says there's not yet enough scientific evidence to fully endorse the idea. But the agency is warming up to people donning helmets when severe weather threatens.
Since a horrific outbreak of tornadoes killed more than 250 people last year in Alabama, safety advocates have been on a crusade.