It's the leading cause of hearing loss (non-genetic) among newborn babies, but more than 91% of women don't even know about CMV (Cytomegalovirus). Once a pregnant woman acquires CMV, there's a 1 in 3 chance she will pass it to her unborn child. We're talking about a common virus that's all around us, but to the unborn baby, it can be debilitating, and even deadly. Drs. Karen Fowler and Shannon Ross tell us what CMV is, why Birmingham is a hot spot for CMV research, and how pregnant mothers can protect themselves and their babies.