Surveillance, foundation for the future: a historical overview and evolution of methodologies.
Scheckler
W E
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Department of Family Medicine, University of Wisconsin Medical School, Madison, USA.
D002487:Centers for Disease Control and Prevention, U.S.; D003428:Cross Infection / Q000453:epidemiology / Q000266:history / Q000517:prevention & control*; D006268:Health Facilities; D049673:History, 20th Century; D006801:Humans; D017053:Infection Control / Q000266:history* / Q000458:organization & administration; D011159:Population Surveillance / Q000379:methods*; D014481:United States / Q000453:epidemiology