However, the United States opted for a complete ban (except for emergency use), while the areas still burdened by malaria and typhus continued to apply the hazardous chemical. The political influence of the United States and the pressure to discontinue funding for global agricultural programs that used DDT has discouraged its use in most parts of the world, and no industrialized nation still uses it. The problems posed by DDT have become global in scope. The most serious and direct threat to health is the possibility of it causing damage to the nervous system and its persistence in nature. It has the ability to travel in the air or through the water supply and has migrated in significant quantities to the Arctic, even though the chemical has never been used there. In 1998, Arctic women, "already have concentrations of DDT and other persistent pollutants in their breast milk and umbilical cord blood far in excess of recommended safe levels". The global concern for the use of DDT culminated in the 2000 convention held in Stockholm, where 120 countries and environmental groups adopted a global treaty that would lead to the eventual outlawing of DDT. This treaty was agreed upon in principle but required ratification by several member states. The Story of DDT and Malaria.
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