Science1991-presentUnited Stateshigh confidence

The hepatitis B birth dose vaccine had been recommended in the United States since 1991.

Notes on verification

Confirmed by multiple CDC MMWR archives and corroborating public health/news sources (PBS, CIDRAP) citing the 1991 ACIP recommendation for universal hepatitis B birth dose vaccination. [tier=gold indep_score=0.723 clusters=3 claim_tier=notable]

Sources