Genotyping via whole genome sequencing

Last updated on 28-2-2025 by Lee Mbambu Maswaku

Test description

Description:

  • Extraction of genomic DNA from the pure strain, using magnetic beads
  • ISO-accredited sequencing (short-reads)
  • Analysis with in-house bioinformatic tools

Result:

Complete characterisation of the strain, including cgMLST profile and antibiotic resistance genes. 

Purpose of the test

Molecular subspecies and/or cgMLST profile 

Criteria for performing this test in the context of reference activities

Fine-typing, or phylogenetic clustering of strains in the context of outbreak investigations

Instructions for samples

  • Type: The applicant sends an isolated and purified strain in a tube transport medium. Alternatively, a culture in liquid or solid medium or, exceptionally, a DNA extract of the sample should be sent. 
  • Minimum quantity: Not applicable.

Instructions for transport

Samples should be packed in a double container and stored at room temperature. The container should be hermetically sealed.

Unacceptable applications

Not applicable.

Turn around time (and frequency of analysis)

  • Turnaround time: 25 working days 
  • Days of analysis: Any weekday ( except public holidays, extended weekends and the period between Christmas and New Year).

Reporting of test results

This analysis is carried out as part of surveillance. If the applicant requires a report of this analysis, it is best to contact the NRC by telephone or electronically . The analysis report will then be sent in the manner desired by the applicant.

 

Pathogen info

Pathogen(s): 
Salmonella
Shigella

Accreditation

Is the analysis accredited?

Materials and methods

Material(s): 
Method reference: 
SOP 12/07/E

Turnaround time and time slots

Turnaround time: 
25 days

Contact person(s)

Contact email

Analysis categories

Medical

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