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General Principles for the Application of These Case Definitions
- Unless specifically stated, only symptomatic cases are
to be reported, however, asymptomatic infections are to be regarded as
cases, if the infection has therapeutic or public health implications.
- A ‘case with an epidemiological link’ is a case that
has either been exposed to a confirmed case, or has had the same exposure as
a confirmed case (e.g. eaten the same food, stayed in the same hotel, etc.).
- A three-tiered system with following levels is to be
used:
- confirmed case: verified by laboratory analysis,
- probable case: clear clinical picture, or linked
epidemiologically to a confirmed case,
- possible case: indicative clinical picture without
being a confirmed or probable case
- The classification on these different levels might
vary according to the epidemiology of the individual diseases.
- Clinical symptoms listed are only given as indicative
examples and not exhaustive.
- For most diseases, several ‘criteria for laboratory
diagnosis’ are listed. Unless otherwise stated, only one of these is needed
to confirm a case.
- N.A. in the case definition list means ‘not
applicable’.
Introductory Notes
- The information reported in this document is intended
only for uniform reporting/comparability of data within the Community
network. The clinical description gives a general outline of the disease and
does not necessarily indicate all the features needed for clinical diagnosis
of the disease.
- The laboratory criteria for diagnosis reported here
may be fulfilled with different testing methods. However, when specific
techniques are indicated, their use is recommended.
Case Definitions 2004 Disease Surveillance Unit
To view these case definitions please
click here.
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