A personal computer-based commercial geographic information system (GIS) was applied to an outbreak of Shigella sonnei infection at Fort Bragg, North Carolina. We used a database consisting of demographic, temporal, a...
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A personal computer-based commercial geographic information system (GIS) was applied to an outbreak of Shigella sonnei infection at Fort Bragg, North Carolina. We used a database consisting of demographic, temporal, and home-address information for all recognized cases of S. sonnei that occurred among health care beneficiaries from 23 May 1997 through 14 August 1997, We imported this database into the GIS, which contained a digitized basemap of the local community. Through simultaneous examination of temporal and spatial distribution of the 59 identified cases of S. sonnei, a focus of infection in a single housing area was identified. Targeted education among residents of the neighborhood in which there was intense transmission was associated with prompt extinction of the epidemic. A GIS offers an efficient and practical way to directly visualize the dynamics of transmission of infectious diseases in the setting of a community outbreak.
A summary of some of the issues concerned with charging for library services (particularly information services and services provided by medical libraries) is given. The results of a survey carried out in July 1992 ar...
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A summary of some of the issues concerned with charging for library services (particularly information services and services provided by medical libraries) is given. The results of a survey carried out in July 1992 are presented. The survey asked respondents to indicate which library services they charged for, the level of charges and the extent to which charges to those outside the organization and those within it differed. Twenty-five libraries (response rate of 69%) replied to the survey. Some further areas for research and discussion are indicated.
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