In the 1990's the UN's World Health Organization (WHO) launched a campaign to vaccinate millions of women in Nicaragua, Mexico and the Philippines between the ages of 15 and 45. The stated purpose was to protect against Tetanus or Lockjaw, a painful sometimes lethal infectious reaction to external wounds or cuts.
However, the vaccine was not given to men or boys, who are more prone to wounds from cuts and rusty nails than the ladies. Noticing this anomaly, Comite Pro Vida de Mexico, a Roman Catholic lay organization, became suspicious and had the vaccine samples tested.
The tests revealed that the WHO Tetanus vaccine used to inoculate women of child bearing age contained human Chorionic Gonadotrophin or hCG, a natural hormone that is secreted in the initial stages of pregnancy, but when combined with a tetanus toxoid stimulated antibodies rendering a woman incapable of maintaining a pregnancy. None of the women vaccinated were told.