making it the first shot most babies receive before leaving the hospital. That said, many adults born before the 1991 hepatitis B vaccine recommendation are living unprotected against the hepatitis B virus.[3]
The HepB vaccine was first licensed for use in 1981, and the following year, the CDC recommended it for high-risk groups such as health care workers, gay men, and illicit injectable drug users. It also recommended a three-dose series of the vaccine for infants born to carrier mothers star...