NATIONAL LIBRARY OF MEDICINE / SCIENCE PHOTO LIBRARY NATIONAL LIBRARY OF MEDICINE / SCIENCE PHOTO LIBRARY
Malaria control operations. Trees being felled in Panama circa 1910 as part of malaria control operations. After the trees are cleared, a ditch will be dug to drain the standing water, which is acting as a breeding ground for mosquitoes. Control of mosquitoes helps to prevent or reduce the incidence of malaria, as well as several other mosquito-borne diseases. Photographed in New Market Creek Swamp, Panama, during the period of the construction of the Panama Canal (1904 to 1914). Reducing the levels of mosquito-borne diseases like malaria and yellow fever in the workforce was critical to the building of the Panama Canal.
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