Salmonella and Enteric Disease

    1. What is the changing burden of invasive Salmonella disease (urban and rural)?
    2. How is Salmonella transmitted in communities?
    3. How can we diagnose invasive Salmonella disease?
    4. What is optimal treatment for MDR invasive Salmonella?
    5. How can we prevent invasive Salmonella disease with vaccines or WSH? 
  • MLW has been working on invasive Salmonella disease for 18 years. There have been sequential epidemics of both typhoid and invasive non-typhoidal Salmonella disease (iNTS) in Blantyre. Understanding of iNTS disease lags typhoid, with many large knowledge and tool gaps. There are new or untrialled vaccines for typhoid and NTS.
  • 1. a) burden of disease estimates, b) longitudinal descriptions
    c) facility-based and community-based incidence estimates (urban and rural)
    2. a) bacterial WGS, phylogeography and GIS studies.
    b) household case-control transmission studies of cases and carriers.
    c) GIS and transmission modelling studies
    3. a) Molecular detection studies in health, exposure and disease.
    b) optimising culture conditions
    c) novel serological and proteomic diagnostics
    4. a) tracking MDR and antimicrobial stewardship
    b) PK/PD and clinical treatment trials
    5. a) blood and gut mucosal immunity, disease and vaccine response
    b) mathematical modelling of vaccine interventions
    c) typhoid conjugate implementation clinical trials
    d) phase 2 NTS vaccine clinical trials
  • Nature Genetics paper on S. Enteritidis emergence
    Recent pair of typhoid epidemic papers Nature Genetics / PLOS NTDs
    Recent first global burden of disease estimate of iNTS disease
    Lancet review on iNTS
    STRATAA strategic award & RFP towards typhoid vaccine implementation
    MRC Exptl Med Challenge for gut mucosal immunology
    BMGF knowledge gap grant for NTS diagnosis and transmission understanding