And now, a modern health alert that began with someone at the center of our abc news family. Barbara walters. We told you about her fall last week, fainting, injuring her head. Well, we know tonight... See More
And now, a modern health alert that began with someone at the center of our abc news family. Barbara walters. We told you about her fall last week, fainting, injuring her head. Well, we know tonight she's in the hospital with a case of chicken chickenpox. Something most of us think is a hazard only for children. But abc's chief medical editor dr. Richard besser tells us, tens of thousands of adults can also be at risk. Bar are has the chickenpox. Yeah. What? Apparently she never had it as a child. So, now she's being told to rest. She's not allowed any visitors and we're telling you, barbara, no scratching, okay? Reporter: It's not as rare as you might think. If you are over 25, there's a good chance you didn't get the chickenpox vaccine, introduced in 1995. And if you didn't get the vaccine, and never had chickenpox, you could be just like barbara. About 30,000 adults get chickenpox every year. It is spread through the air and contact with those itchy spots. If you have never had chixen pox and never had the vaccine, you might want to get to a doctor's office and get it now. Adult chickenpox isn't just inconvenient. It can also lead to complications, like pneumonia, brain inflammation and bacterial infections. In barbara's case, chickenpox is causing that annoying itching. The spots will spread worse if you scratch them up. We love you, we miss you, we just don't want to hug you. Reporter: And even if you had the chixen pox, you're still able to get shingles, which is vac seep recommended for everyone over 60. The good news, barbara is doing great. But remember, adults have to worry not just about chickenpox, but also shingles. Much more common, very painful. And come home soon, barbara. We are waiting for you here. Thank you, rich.
This transcript has been automatically generated and may not be 100% accurate.