joining us as always, dr. david samadi, chairman of urology. >> and dr. marc siegel, associate professor of medicine. author of "the inner pulse, unlocking the secret code of sickness and health." >> we begin with something that's really important. have you heard about the meningitis outbreaks at some college campuses? now a fourth student has been struck by meningitis at the university of california santa barbara. it's a similar strain, they say, of the disease that sickened eight people already at princeton university in new jersey. dr. samadi, how dangerous is this? first, how is meningitis spread, and you think it could be scary if it gets on a college campus. >> frightening. >> yes, frightening, not only because of the disease by itself, but the fact it's been around since march and it hasn't gone away. usually, they have a short period and they disappear on its own. the fact it's gone from princeton to santa barbara is that's a reason why cdc made an unprecedented decision to bring in the vaccines from europe, to really, against fda approval, to see

. >> and dr. david samadi is here. great to see both of you. >> great to see you. >> we're ready to learn. >> we start with something that's really important. this has to do with a new warning about a disease that many of us rarely worry about. that's measles. you have i

. >> and dr. david samadi is here. great to see both of you. >> great to see you. >> we're ready to learn. >> we start with something that's really important. this has to do with a new warning about a disease that many of us rarely worry about. that's measles. you have it when you were a kid? measles have been practically eradicated in the country, but they say this year, new pockets are creating some concern. dr. siegel, measles are back? why, and what can we do about it. >> measles is a virus. the thing we need to know is that it's a wildly contagious virus. we talk about flu on the show a lot. to give you an idea, if someone in your house has the flu, there's a 1 in 4 chance you're going to get it. if someone in your house has measles, there's a 94% chance you'll get it. it starts with runny nose, high fever, red eyes, and then a few days later, this red, red rash on the upper part of the body and then it spreads. the centers for disease control told me measles is a perfect example how a health problem anywhere is a

. >> and dr. david samadi from lenox hill hospital. we're ready to learn. start with something that's really important. this has to do with a new warning about a disease that many of us rarely worry about and that's measles. measles have been practically eradicated. but now they say new pockets are creating concern. dr. segal, measles are back. why? >> first of all, measles is a virus. the thing we have to know is it's a wildly contagious virus. we talk about flu on the show. if someone in your house has the flu, there's a one in four chance you get it. if someone in your house has measles, there's a 90% chance you'll get it. what does it look like? you start with runny nose, high fever, red eyes is very characteristic and a few days later you get this red rash on the upper part of the body and it spreads. the centers for disease control says measles is a perfect example of how a health problem anywhere is a health problem everywhere. the reason that is the case is because we need vaccination. one of the biggest heroes of the 20th and 21st century is the mm