A medical freedom group recently promoted misinformation and speculation about the tetanus vaccine, including the long-disproven myth that it is dangerous during pregnancy and causes infertility. This false claim has repeatedly been promoted by vaccine opponents worldwide.
Recommendation: The persistence of this misinformation increases its risk. The disproven rumor that tetanus vaccines were used to sterilize Kenyan women is based on a widely circulated rumor that the vaccine contains the hormone HCG, which is produced during pregnancy. Multiple studies determined that the tetanus vaccine does not contain the hormone. Fact Checking Source(s): Mayo Clinic, American College of Obstetricians and Gynecologists, FactCheck.org