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UK Standards for Microbiology Investigations UK Standards for Microbiology Investigations Identification of Listeria species, and other Non-Sporing Gram Positive Rods (except Corynebacterium) Issued by the Standards Unit, Microbiology Services, PHE Bacteriology – Identification | ID 3 | Issue no: 3.1 | Issue date: 29.10.14 | Page: 1 of 29 © Crown copyright 2014 Identification of Listeria species, and other Non-Sporing Gram Positive Rods (except Corynebacterium) Acknowledgments UK Standards for Microbiology Investigations (SMIs) are developed under the auspices of Public Health England (PHE) working in partnership with the National Health Service (NHS), Public Health Wales and with the professional organisations whose logos are displayed below and listed on the website https://www.gov.uk/uk- standards-for-microbiology-investigations-smi-quality-and-consistency-in-clinical- laboratories. SMIs are developed, reviewed and revised by various working groups which are overseen by a steering committee (see https://www.gov.uk/government/groups/standards-for-microbiology-investigations- steering-committee). The contributions of many individuals in clinical, specialist and reference laboratories who have provided information and comments during the development of this document are acknowledged. We are grateful to the Medical Editors for editing the medical content. For further information please contact us at: Standards Unit Microbiology Services Public Health England 61 Colindale Avenue London NW9 5EQ E-mail: [email protected] Website: https://www.gov.uk/uk-standards-for-microbiology-investigations-smi-quality- and-consistency-in-clinical-laboratories UK Standards for Microbiology Investigations are produced in association with: Logos correct at time of publishing. Bacteriology – Identification | ID 3 | Issue no: 3.1 | Issue date: 29.10.14 | Page: 2 of 29 UK Standards for Microbiology Investigations | Issued by the Standards Unit, Public Health England Identification of Listeria species, and other Non-Sporing Gram Positive Rods (except Corynebacterium) Contents ACKNOWLEDGMENTS .......................................................................................................... 2 AMENDMENT TABLE ............................................................................................................. 4 UK STANDARDS FOR MICROBIOLOGY INVESTIGATIONS: SCOPE AND PURPOSE ....... 6 SCOPE OF DOCUMENT ......................................................................................................... 9 INTRODUCTION ..................................................................................................................... 9 TECHNICAL INFORMATION/LIMITATIONS ......................................................................... 15 1 SAFETY CONSIDERATIONS .................................................................................... 16 2 TARGET ORGANISMS .............................................................................................. 16 3 IDENTIFICATION ....................................................................................................... 16 4 IDENTIFICATION OF LISTERIA SPECIES AND OTHER NON-SPORING GRAM POSITIVE RODS (EXCEPT CORYNEBACTERIUM) ................................................. 22 5 REPORTING .............................................................................................................. 23 6 REFERRALS .............................................................................................................. 24 7 NOTIFICATION TO PHE OR EQUIVALENT IN THE DEVOLVED ADMINISTRATIONS .................................................................................................. 25 REFERENCES ...................................................................................................................... 26 Bacteriology – Identification | ID 3 | Issue no: 3.1 | Issue date: 29.10.14 | Page: 3 of 29 UK Standards for Microbiology Investigations | Issued by the Standards Unit, Public Health England Identification of Listeria species, and other Non-Sporing Gram Positive Rods (except Corynebacterium) Amendment Table Each SMI method has an individual record of amendments. The current amendments are listed on this page. The amendment history is available from [email protected]. New or revised documents should be controlled within the laboratory in accordance with the local quality management system. Amendment No/Date. 9/29.10.14 Issue no. discarded. 3 Insert Issue no. 3.1 Section(s) involved Amendment Whole document. Hyperlinks updated to gov.uk. Page 2. Updated logos added. Updates have been done on 3.4 and 3.5 to reflect standards in practice. Identification. Subsection 3.5 has been updated to include the Rapid Molecular Typing Methods. Amendment No/Date. 8/18.06.14 Issue no. discarded. 2.2 Insert Issue no. 3 Section(s) involved Amendment The scope has been updated to give a link to the Scope of document. document for identification of Corynebacterium species. Taxonomy updated. More information has been added to the Characteristics section. Addition of medically important Listeria species. Other non-sporing rods that are medically important are also mentioned Introduction. and their characteristic described. References updated in the relevant subheadings. Section on Principles of Identification has been updated to reflect the correct temperatures used for tumbling motility in identification of Listeria species. Bacteriology – Identification | ID 3 | Issue no: 3.1 | Issue date: 29.10.14 | Page: 4 of 29 UK Standards for Microbiology Investigations | Issued by the Standards Unit, Public Health England Identification of Listeria species, and other Non-Sporing Gram Positive Rods (except Corynebacterium) Addition of information regarding motility test and Technical differentiation of Listeria species from Group B Information/Limitations. streptococci. This section has been updated to include the Safety considerations. references. The section on the Target Organisms has been Target Organisms. updated. Updates have been done on 3.1, 3.3 and 3.4 to reflect standards in practice. It also includes all the non-sporing Gram positive rods apart from Listeria species. Section 3.4 has been updated accordingly. Identification. The table in 3.3 has been updated with references. Subsection 3.5 has been updated to include the Rapid Molecular Methods. 3.7 has been removed and put under the section “Technical Information/Limitation”. Modification of flowchart for identification of Identification Flowchart. Listeria species has been done for easy guidance. Subsections 5.2, 5.3, 5.5 and 5.6 have been Reporting. updated to reflect reporting practice. The addresses of the Reference Laboratories Referral. have been updated. Whole document. Document presented in a new format. References. Some references updated. The flowchart in the appendix titled “Characteristics to distinguish between non- Appendix. sporing Gram positive rods on blood agar” has been deleted from this document and merged with the flowchart in section 4. Bacteriology – Identification | ID 3 | Issue no: 3.1 | Issue date: 29.10.14 | Page: 5 of 29 UK Standards for Microbiology Investigations | Issued by the Standards Unit, Public Health England Identification of Listeria species, and other Non-Sporing Gram Positive Rods (except Corynebacterium) # UK Standards for Microbiology Investigations : Scope and Purpose Users of SMIs • SMIs are primarily intended as a general resource for practising professionals operating in the field of laboratory medicine and infection specialties in the UK. • SMIs provide clinicians with information about the available test repertoire and the standard of laboratory services they should expect for the investigation of infection in their patients, as well as providing information that aids the electronic ordering of appropriate tests. • SMIs provide commissioners of healthcare services with the appropriateness and standard of microbiology investigations they should be seeking as part of the clinical and public health care package for their population. Background to SMIs SMIs comprise a collection of recommended algorithms and procedures covering all stages of the investigative process in microbiology from the pre-analytical (clinical syndrome) stage to the analytical (laboratory testing) and post analytical (result interpretation and reporting) stages. Syndromic algorithms are supported by more detailed documents containing advice on the investigation of specific diseases and infections. Guidance notes cover the clinical background, differential diagnosis, and appropriate investigation of particular clinical conditions. Quality guidance notes describe laboratory processes which underpin quality, for example assay validation. Standardisation of the diagnostic process through the application of SMIs helps to assure the equivalence of investigation strategies in different laboratories across the UK and is essential for public health surveillance, research and development activities. Equal Partnership Working SMIs are developed in equal partnership with PHE, NHS, Royal College of Pathologists and professional societies. The list of participating societies may be found at https://www.gov.uk/uk-standards-for- microbiology-investigations-smi-quality-and-consistency-in-clinical-laboratories. Inclusion of a logo in an SMI indicates participation of the society in equal partnership and support for the objectives and process of preparing SMIs. Nominees of professional societies are members of the Steering Committee and Working Groups which
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