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Dr. Sadie Bell, BSc, PhD

Research Fellow

Currently working on projects to explore vaccination programme delivery in the UK.


Before joining LSHTM, I studied for my PhD at the University of York. My thesis explored the accessibility and acceptability of HIV services in the UK to adults receiving a positive HIV diagnosis at age 50 years and over, using a mixed-methods approach. For this project, I performed qualitative interviews with adults diagnosed with HIV at age 50+ years and healthcare professionals (HCPs) working in sexual health/HIV services. I also conducted a survey of HCPs working in sexual health/HIV services and analysed national GUM attendance and HIV testing data by age.I completed my BSc in Evidence-Based Nursing Practice (Adult) at the University of York in March 2011. Following this, I worked as a staff nurse on a haematology and oncology unit and as an oncology research nurse before starting my PhD in September 2013.


Challenges experienced with early introduction and sustained consumption of allergenic foods in the Enquiring About Tolerance (EAT) study: A qualitative analysis
Journal of Allergy and Clinical Immunology

2019The early introduction group participants of the Enquiring About Tolerance study were asked to undertake a proscriptive regimen of early introduction and sustained consumption of 6 allergenic foods. It was envisaged that this might be challenging, and early introduction group families were presented with an open-text question to express any problems they were experiencing with the regimen in recurring online questionnaires.

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'I don't think anybody explained to me how it works': qualitative study exploring vaccination and primary health service access and uptake amongst Polish and Romanian communities in England.
BMJ Open

2019This study explored vaccination attitudes and behaviours among Polish and Romanian communities, and related access to primary healthcare services. DESIGN:A qualitative study using in-depth semistructured interviews with Polish and Romanian community members (CMs) and healthcare workers (HCWs) involved in vaccination in areas with large Polish and Romanian communities.

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Value and effectiveness of National Immunization Technical Advisory Groups in low- and middle-income countries: a qualitative study of global and national perspectives
Health Policy and Planning

2019The Global Vaccine Action Plan proposes that every country establish or have access to a National Immunization Technical Advisory Group (NITAG) by 2020. The NITAG role is to produce evidence-informed recommendations that incorporate local context, to guide national immunization policies and practice.

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Is partnership the answer? Delivering the national immunisation programme in the new English health system: a mixed methods study
BMC Public Health

2019The English national health system experienced a major reorganisation in April 2013. This mixed methods study examined how staff managed to deliver the national immunisation programme within a new health infrastructure and explored the role and contribution of 'partnership working' to programme implementation.

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The role of National Immunisation Technical Advisory Groups (NITAGs) in strengthening national vaccine decision-making: A comparative case study of Armenia, Ghana, Indonesia, Nigeria, Senegal & Uganda

2018Improving evidence informed decision-making in immunisation is a global health priority and many low and middle-income countries have established National Immunisation Technical Advisory Groups (NITAGs) as independent technical advisory bodies for this purpose. NITAG development and strengthening has received financial and technical support over the past decade, but relatively little evaluation.

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Area of Expertise


Department of Global Health and Development

Faculty of Public Health and Policy

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