National Library of Medicine

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After scientists confirmed that mosquitoes can transmit yellow fever and other diseases, mosquito control emerged as an important public health measure. Discover how Americans have managed mosquitoes at home and abroad through this selection of items from the NLM collection.

Men dig a ditch

Hand Ditching for Malaria Control, 1949

Courtesy National Library of Medicine

Digging and maintaining drainage ditches by hand formed an essential part of any mosquito control program. Good drainage eliminated mosquito breeding sites. This training film, produced by the State Board of Health of South Carolina, explains the proper techniques for digging ditches to control mosquitoes.