And if you’re pregnant, you can pass it on to your newborn. Viral hepatitis is an inflammation of your liver that's caused by a virus. The most common ones in the U.S. are hep A, B, and C.

At least one-third of the world's population has been infected with the hepatitis B virus (HBV), and 400 million people are chronic carriers. In most populations, chronic HBV infection is the ...