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Appendix 1 - Case Definitions
The following table displays the case definitions for gastrointestinal diseases notified to the National Notifiable Diseases Surveillance System in 1999. If you are not able to access these data please e-mail cdi.editor@health.gov.au.
Appendix 1a. Case definitions and ICD-10 code for notifiable diseases reported to NNDSS in 1999, gastrointestinal diseases
Disease |
Case definition (NHMRC 1994) |
ICD-10 code(s) |
|---|---|---|
| Botulism | A clinically compatible illness (diplopia, blurred vision, muscle weakness, paralysis or bulbar palsy) with a history of exposure to a probable food source in the absence of a contaminated wound
AND one of the following: isolation of Clostridium botulinum from faeces or other clinical specimens OR detection of C. botulinum toxin in serum, faeces or probable food source OR epidemiological linkage to other cases of confirmed foodborne botulism |
AO5.1 |
| Campylobacteriosis | Isolation of Campylobacter species from a clinical specimen | AO4.5 |
| Haemolytic uraemic syndrome (HUS)* | Acute microangiopathic anaemia on peripheral blood smear
AND acute renal impairment AND/OR thrombocytopaenia |
D59.3 |
| Hepatitis A | Anti-HAV IgM positive in the absence of recent vaccination
OR demonstration of a clinical case of hepatitis (jaundice and/or elevated aminotransferase levels) without a non-infectious cause AND epidemiologically linked to a serologically confirmed case |
B15 |
| Hepatitis E* | A person who demonstrates anti-HEV IgM in sera collected less than 4 weeks after onset of acute hepatitis
OR IgG seroconversion in paired sera OR HEV identified by nucleic acid test OR HEV identified by EM on stool OR a hepatitis-like illness in the absence of other causes of hepatitis and detection of antibodies to HEV |
B17.2 |
| Listeriosis | Isolation of Listeria monocytogenes from a site which is normally sterile, including foetal gastrointestinal contents | A32 |
| Salmonellosis | Isolation of Salmonella species (excluding S. typhi) from any clinical specimen | AO2 |
| Shigellosis | Isolation of Shigella species from any clinical specimen | AO3 |
| SLTEC, VTEC* | A person with bloody diarrhoea or HUS from whom, in a clinical specimen: Shiga-toxin producing E. coli (SLTEC) are isolated
OR isolation of Shiga-toxin from an E. coli isolate OR identification of the gene associated with the production of Shiga-toxin in E. coli |
A4.1, A4.4 |
| Typhoid | Isolation of Salmonella typhi or S. parathphi serotype A, B, or C from any clinical specimen | AO1.0 |
| Yersiniosis | Isolation of Yersinia enterocolitica or Y. pseudotuberculosis from blood or faeces
OR detection of circulating antigen by ELISA or agglutination test OR positive Yersinia serology in the presence of clinical compatible illness |
AO4.6 |
All definitions from Surveillance Case Definitions, National Health and Medical Research Council, March 1994, except those marked * which are draft summary definitions from the Communicable Diseases Network Australia (January 2001). Some Australian States and Territories have their own case definitions for some diseases, which may vary from those shown here.
This article was published in Communicable Diseases Intelligence Volume 25, No 4, November 2001.
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Communicable Diseases Surveillance
This issue - Vol 25, No 4, November 2001
NNDSS 1999 Annual Report
Communicable Diseases Intelligence