The Gastrointestinal Infections Reference Unit (GIRU) is the result of the integration of the former Escherichia, Shigella, Yersinia and Vibrio (ESYV) Reference Unit and the Campylobacter and Helicobacter (CH) Reference Unit. Its range of Reference Services include identification to genus and species level, phenotypic and molecular typing, resistance typing and antimicrobial susceptibility testing. The Unit also offers a serodiagnostic service for E. coli O157 and other selected serogroups of Vero cytotoxin-producing E. coli (VTEC), Salmonella Typhi and Paratyphi A, B and C, Yersinia enterocolitica and Yersinia pseudotuberculosis.  Also offered are a primary diagnostic service for Helicobacter species and detection of VTEC in faeces from clinically appropriate cases.

• Campylobacter, Helicobacter and related organisms
  Information on reference and diagnostic services for Campylobacter, Helicobacter and related organisms
  Added/updated: 15 September 2009
  
• Shigella, Yersinia and Vibro
  Information on reference and diagnostic service for Shigella, Yersinia, Vibro and related organisms
  Added/updated: 15 September 2009
  
• Reference and diagnostic services
  Information on reference and diagnostic services for E coli.
  Added/updated: 17 September 2009