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Volume 9, Number 9—September 2003

Perspective

Automated, Laboratory-based System Using the Internet for Disease Outbreak Detection, the Netherlands

Marc-Alain Widdowson*†Comments to Author , Arnold Bosman†, Edward van Straten†, Mark Tinga†, Sandra Chaves†, Liesbeth van Eerden†, and Wilfred van Pelt†
Author affiliations: *European Programme for Intervention Epidemiology and Training, Bilthoven, the Netherlands; †National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands

Main Article

Figure 2

View of Webpage listing surveillance diagnoses (“onderwerp”) flagged on week 9 of 2002. The asterisks in the columns labeled “verheffingsweek” indicate the week of sampling when the number of a particular surveillance diagnosis exceeded the threshold defined by an historical algorithm (“historische drempel”). The surveillance diagnosis for syphilis (“syphilis, vroege”) is flagged at the end of 2001 (weeks 51 and 52) and 2002 (weeks 4–9).

Figure 2. View of Webpage listing surveillance diagnoses (“onderwerp”) flagged on week 9 of 2002. The asterisks in the columns labeled “verheffingsweek” indicate the week of sampling when the number of a particular surveillance diagnosis exceeded the threshold defined by an historical algorithm (“historische drempel”). The surveillance diagnosis for syphilis (“syphilis, vroege”) is flagged at the end of 2001 (weeks 51 and 52) and 2002 (weeks 4–9).

Main Article

1Example 1: A surveillance diagnosis for a case of respiratory syncytial virus infection is a positive culture or positive polymerase chain reaction (PCR) or positive direct immunofluorescence or positive enzyme immunoassay, with all positive tests on the same case-patient within a 6-week period reported as one surveillance diagnosis. Example 2: A surveillance diagnosis for a case of invasive Haemophilus influenza infection is a positive culture from a normally sterile site, with all positive results from the same case in 3 months considered one surveillance diagnosis.

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