Project

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Overview

Project title
Pathogen outbreak study - Pseudomonas single isolate WGS

People involved
Principal investigator : Prof Mark Nicol
Bioinformatics support team: Katie Lennard

Short description of project
This study was prompted by an unusual outbreak of wild type Pseudomonas that coincided with the Cape Town drought. Preliminary molecular analysis suggests clonality, the interest is therefore to try an establish how this outbreak came about and whether the drought is in some way responsible. Pseudomonas are waterborne opportunistic pathogens that can form biofilms in plumbing pipes. One hypothesis is therefore that the drought, with decreased water pressure allowed increased biofilm formation and subsequently increased concentrations in drinking water. The data will include WGS of blood culture isolates and water samples from before, during, and after the outbreak (96 samples).

Objectives
Perform whole-genome assembly of single isolates. Trace clonality, SNV and look into drug resistance and virulence elements.

Issue tracking

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Spent time

419.50 hours

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Latest news

Differential absence/presence srst2 VF/AMRs
Multiple Fisher's exact tests on VF & AMR presence absence in ST303 vs non-ST303 strains.
Added by Katie Lennard over 4 years ago

Differential absence/presence Ps assembled gene set
Fisher's exact testing on the Prokka-annotated list of genes acquired using the Tychus assembly module
Added by Katie Lennard over 5 years ago

Results finalized and plots for publication in R
Analyses generated on Ilifu have now been finalized for publication. Plots for publication were generated in R based on these results
Added by Katie Lennard over 5 years ago

Manually curate uncertain MLST results
MLST results designated by srst2 as 'uncertain' were manually curated
Added by Katie Lennard over 5 years ago

Check coverage cutoffs for SNP analysis
No need for additional coverage cutoffs
Added by Katie Lennard almost 6 years ago

View all news

Members

Manager: Katie Lennard

Developer: Gerrit Botha, Nicky Mulder

Reporter: Gerrit Botha, Nicky Mulder