1 Matching Annotations
  1. Jan 2021
    1. In 1945, against the advice of investigators who had studied the pharmacology of the compound and found it dangerous for all forms of life, DDT (chlorophenoethane, dichloro-diphenyl-trichloroethane) was released in the United States and other countries for general use by the public as an insecticide. . . .

      Poliomyelitis can be caused by a virus, chemicals or a combination of the two.