NATIONAL LIBRARY OF MEDICINE / SCIENCE PHOTO LIBRARY NATIONAL LIBRARY OF MEDICINE / SCIENCE PHOTO LIBRARY
DDT pesticide use, World War II. U.S. Soldier spraying barracks with DDT at the 26th Field Hospital in Khorramabad, Iran. DDT was widely used as a pesticide in the 1940s and 1950s, when it was used extensively in tropical countries, where insect-borne diseases such as malaria were a severe problem. Many insects developed resistance to it, however, and its widespread use had grave effects on other wildlife. It is highly persistent in the environment, and fish and bird numbers fell dramatically in many areas. It was banned in many countries, although it is still used in tropical countries as it is cheap and still reasonably effective. DDT is an abbreviation for dichlorodiphenyltrichloroethane. Photographed in 1944.
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