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When creating or requesting concepts for the H antigen for Escherichia Coli O serogroup that cannot be typed, SNOMED International requests are declined due to ambiguity, but reporting of these organisms is sometimes necessary for Public Health reporting in Canada. SNOMED CT Canadian In these cases, the SNOMED CT Canadian Edition accommodates requests for public health reporting as needed.
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For the Ecoli with H typed we have examples like Escherichia coli serotype O7: H18, where the parent is Escherichia coli serogroup O7:
- 458090002 |Escherichia coli serogroup O7 (organism)| (Parent)
- 458099001 |Escherichia coli serotype O7: H18 (organism)| Child
- 458090002 |Escherichia coli serogroup O7 (organism)| (Parent)
For E Coli where the O antigen is not typed or was unable to be typed, the guidance is to use E. coli serogroup O undetermined: H
Example:
- Escherichia coli serogroup O (organism)| (Parent)
- E coli serogroup O undetermined: H (organism) (Child)
- Escherichia coli serogroup O undetermined:H19 (organism) (Child)
- E coli serogroup O undetermined: H (organism) (Child)