title: Comparison of an active and passive surveillance system of primary care providers for hepatitis, measles, rubella, and salmonellosis in Vermont.
abstract: Between June 1, 1980 and May 31, 1981, the Vermont Health Department telephoned a randomly chosen half of the state's primary care offices for surveillance reports of hepatitis, measles, rubella, and salmonellosis. No reports were actively solicited from the other half of the primary-care practices in the state. Active-surveillance units made more reports and more complete reports of diseases and had twice the number of reports per patient seen by the practice than did passive-surveillance units. (Am J Public Health 1983; 73:795-797.)
mesh_terms: D006505:Hepatitis / Q000453:epidemiology*; D006801:Humans; D008457:Measles / Q000453:epidemiology*; D010821:Physicians, Family; D011159:Population Surveillance; D011635:Public Health Administration; D012409:Rubella / Q000453:epidemiology*; D012480:Salmonella Infections / Q000453:epidemiology*; D014707:Vermont