Is our nation at risk for a pandemic? Dr. Richard Besser speaks out about the biggest health mistake he believes Americans are making. Find out how what he learned at the CDC has changed the way he thinks about medicine.

View Part 2 of TV's Real-Life Disease Detective.

Read about the new bird flu in China. Should you be concerned?

After years of trying to get pregnant, doctors told Kelsi Pierce it would be near impossible for her to conceive a child. However, Kelsi got the surprise of her life when her mom volunteered to be her surrogate — and she found out she, too, was pregnant!