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Louis Fisher · SciRah

Researcher profile · Semantic Scholar

Louis Fisher

Bennett Institute for Applied Data Science, University of Oxford

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Louis Fisher — researcher profile on SciRah

ORCID iD 0000-0002-0295-3812Homepage

h-index: 18
Works: 74
Citations: 1,085

Most-cited papers

Trends and clinical characteristics of COVID-19 vaccine recipients: a federated analysis of 57.9 million patients' primary care records in situ using OpenSAFELY
H. Curtis, P. Inglesby, C. Morton, B. Mackenna +41 more
2021The British journal of general practice : the journal of the Royal College of General Practitioners112 citations Open access
Semantic Scholar
Risk of severe COVID-19 outcomes associated with immune-mediated inflammatory diseases and immune-modifying therapies: a nationwide cohort study in the OpenSAFELY platform
B. Mackenna, Nicholas A. Kennedy, A. Mehrkar, A. Rowan +44 more
2021medRxiv98 citations Open access
Semantic Scholar
Mortality among Care Home Residents in England during the first and second waves of the COVID-19 pandemic: an observational study of 4.3 million adults over the age of 65
Anna Schultze, E. Nightingale, D. Evans, W. Hulme +38 more
2022The Lancet Regional Health - Europe65 citations Open access
Semantic Scholar
Changes in COVID-19-related mortality across key demographic and clinical subgroups in England from 2020 to 2022: a retrospective cohort study using the OpenSAFELY platform
L. Nab, E. Parker, Colm D Andrews, W. Hulme +30 more
2023Lancet Public Health64 citations Open access
Semantic Scholar
Comparative effectiveness of sotrovimab and molnupiravir for prevention of severe covid-19 outcomes in patients in the community: observational cohort study with the OpenSAFELY platform
Bang Zheng, A. Green, J. Tazare, H. Curtis +29 more
2022British medical journal63 citations Open access
Semantic Scholar
Impact of first UK COVID-19 lockdown on hospital admissions: Interrupted time series study of 32 million people
S. A. Shah, S. Brophy, John F. Kennedy, Louis Fisher +14 more
2022EClinicalMedicine62 citations Open access
Semantic Scholar
Waning effectiveness of BNT162b2 and ChAdOx1 covid-19 vaccines over six months since second dose: OpenSAFELY cohort study using linked electronic health records
E. Horne, W. Hulme, R. Keogh, T. Palmer +25 more
2022British medical journal53 citations Open access
Semantic Scholar
Cardiac Rhythm Device Identification Using Neural Networks
J. Howard, Louis Fisher, M. Shun-shin, D. Keene +9 more
2019JACC Clinical Electrophysiology49 citations Open access
Semantic Scholar
Impact of vaccination on the association of COVID-19 with cardiovascular diseases: An OpenSAFELY cohort study
G. Cezard, R. Denholm, R. Knight, Ying-Hui Wei +28 more
2024Nature Communications44 citations Open access
Semantic Scholar
Describing the population experiencing COVID-19 vaccine breakthrough following second vaccination in England: a cohort study from OpenSAFELY
A. Green, H. Curtis, W. Hulme, Elizabeth J. Williamson +37 more
2021BMC Medicine35 citations Open access
Semantic Scholar
OpenSAFELY: a platform for analysing electronic health records designed for reproducible research
L. Nab, A. Schaffer, W. Hulme, N. Devito +41 more
2024Pharmacoepidemiology and Drug Safety27 citations Open access
Semantic Scholar
Safety of COVID-19 vaccination and acute neurological events: A self-controlled case series in England using the OpenSAFELY platform
J. Walker, Anna Schultze, J. Tazare, A. Tamborska +33 more
2022Vaccine27 citations Open access
Semantic Scholar
Incidence of diabetes after SARS-CoV-2 infection in England and the implications of COVID-19 vaccination: a retrospective cohort study of 16 million people
Kurt Taylor, S. Eastwood, Venexia M. Walker, G. Cezard +23 more
2024The Lancet Diabetes and Endocrinology26 citations Open access
Semantic Scholar
Comparative effectiveness of ChAdOx1 versus BNT162b2 covid-19 vaccines in health and social care workers in England: cohort study using OpenSAFELY
W. Hulme, E. Williamson, A. Green, K. Bhaskaran +38 more
2021British medical journal26 citations Open access
Semantic Scholar
Comparative effectiveness of sotrovimab and molnupiravir for prevention of severe COVID-19 outcomes in non-hospitalised patients: an observational cohort study using the OpenSAFELY platform
Bang Zheng, A. Green, J. Tazare, Helen J. Curtis +29 more
2022medRxiv24 citations Open access
Semantic Scholar
Trends, variation, and clinical characteristics of recipients of antiviral drugs and neutralising monoclonal antibodies for covid-19 in community settings: retrospective, descriptive cohort study of 23.4 million people in OpenSAFELY
A. Green, H. Curtis, R. Higgins, L. Nab +38 more
2023BMJ Medicine23 citations Open access
Semantic Scholar
Postoperative mortality and complications in patients with and without preoperative SARS-CoV2 infection: A service evaluation of 24 million linked records using OpenSAFELY
C. McInerney, A. Kotze, S. Bacon, J. Cutting +7 more
2023Anaesthesia23 citations Open access
Semantic Scholar
COVID-19 and Mental Illnesses in Vaccinated and Unvaccinated People
Venexia M. Walker, P. Patalay, Jose I. Cuitun Coronado, R. Denholm +23 more
2024JAMA psychiatry21 citations Open access
Semantic Scholar
Clinical and health inequality risk factors for non-COVID-related sepsis during the global COVID-19 pandemic: a national case-control and cohort study
Xiaomin Zhong, Diane Ashiru-Oredope, Alexander Pate, Glen P Martin +54 more
2023EClinicalMedicine16 citations Open access
Semantic Scholar
The impact of the COVID-19 pandemic on the treatment of common infections in primary care and the change to antibiotic prescribing in England
Ya-Ting Yang, Xiaomin Zhong, A. Fahmi, S. Watts +10 more
2023Antimicrobial Resistance and Infection Control16 citations Open access
Semantic Scholar
Impact of COVID-19 on broad-spectrum antibiotic prescribing for common infections in primary care in England: a time-series analyses using OpenSAFELY and effects of predictors including deprivation
Xiaomin Zhong, Alexander Pate, Ya-Ting Yang, A. Fahmi +11 more
2023The Lancet Regional Health - Europe15 citations Open access
Semantic Scholar
Repeated antibiotic exposure and risk of hospitalisation and death following COVID-19 infection (OpenSAFELY): a matched case–control study
Ya-Ting Yang, David Wong, D. Ashcroft, J. Massey +10 more
2023EClinicalMedicine12 citations Open access
Semantic Scholar
Impact of the COVID-19 pandemic on antipsychotic prescribing in individuals with autism, dementia, learning disability, serious mental illness or living in a care home: a federated analysis of 59 million patients’ primary care records in situ using OpenSAFELY
O. Macdonald, A. Green, A. Walker, Helen J. Curtis +29 more
2023BMJ Mental Health12 citations Open access
Semantic Scholar
During the COVID-19 pandemic 20 000 prostate cancer diagnoses were missed in England
A. Lemanska, Colm D Andrews, Louis Fisher, S. Bacon +6 more
2024BJU International11 citations Open access
Semantic Scholar
Factors associated with COVID-19 vaccine uptake in people with kidney disease: an OpenSAFELY cohort study
T. O. Collaborative, E. Parker, J. Tazare, W. Hulme +26 more
2023BMJ Open11 citations Open access
Semantic Scholar
A comprehensive high cost drugs dataset from the NHS in England - An OpenSAFELY-TPP Short Data Report
A. Rowan, C. Bates, W. Hulme, D. Evans +43 more
2021Wellcome Open Research11 citations Open access
Semantic Scholar
The impact of COVID-19 on antibiotic prescribing in primary care in England: Evaluation and risk prediction of appropriateness of type and repeat prescribing
Xiaomin Zhong, Alexander Pate, Ya-Ting Yang, A. Fahmi +11 more
2023Journal of Infection10 citations Open access
Semantic Scholar
Changes in COVID-19-related mortality across key demographic and clinical subgroups: an observational cohort study using the OpenSAFELY platform on 18 million adults in England
T. O. Collaborative, L. Nab, Edward P. K. Parker, C. Andrews +31 more
2022medRxiv10 citations Open access
Semantic Scholar
Identification of patients undergoing chronic kidney replacement therapy in primary and secondary care data: validation study based on OpenSAFELY and UK Renal Registry
S. Santhakumaran, Louis Fisher, Bang Zheng, V. Mahalingasivam +12 more
2024BMJ Medicine7 citations Open access
Semantic Scholar
The Use of Online Consultation Systems or Remote Consulting in England Characterized Through the Primary Care Health Records of 53 Million People in the OpenSAFELY Platform: Retrospective Cohort Study
Martina Fonseca, B. Mackenna, A. Mehrkar, C. Walters +10 more
2023JMIR Public Health and Surveillance7 citations Open access
Semantic Scholar
Effectiveness of BNT162b2 booster doses in England: an observational study in OpenSAFELY-TPP
W. Hulme, Elizabeth J. Williamson, E. Horne, A. Green +40 more
2022medRxiv7 citations Open access
Semantic Scholar
Long-term kidney outcomes after COVID-19: a matched cohort study using the OpenSAFELY platform
V. Mahalingasivam, Bang Zheng, Kevin Wing, E. Parker +27 more
2025The Lancet Regional Health - Europe6 citations Open access
Semantic Scholar
OpenSAFELY NHS Service Restoration Observatory 2: changes in primary care clinical activity in England during the COVID-19 pandemic
H. Curtis, B. Mackenna, M. Wiedemann, Louis Fisher +28 more
2023The British journal of general practice : the journal of the Royal College of General Practitioners6 citations Open access
Semantic Scholar
CHALLENGES IN ESTIMATING THE EFFECTIVENESS OF 2 DOSES OF COVID-19 VACCINE BEYOND 6 MONTHS IN ENGLAND
E. Horne, W. Hulme, Ruth H. Keogh, Tom M. Palmer +14 more
2023American Journal of Epidemiology6 citations Open access
Semantic Scholar
A national audit of pancreatic enzyme prescribing in pancreatic cancer from 2015 to 2023 in England using OpenSAFELY-TPP
A. Lemanska, Colm D Andrews, Louis Fisher, B. Butler-Cole +5 more
2022medRxiv6 citations Open access
Semantic Scholar
Healthcare in England was affected by the COVID-19 pandemic across the pancreatic cancer pathway: A cohort study using OpenSAFELY-TPP
A. Lemanska, C. Andrews, Louis Fisher, S. Bacon +9 more
2022medRxiv6 citations Open access
Semantic Scholar
Impact of the COVID-19 pandemic on antidepressant prescribing with a focus on people with learning disability and autism: an interrupted time series analysis in England using OpenSAFELY-TPP
C. Cunningham, O. Macdonald, A. Schaffer, Andrew Brown +28 more
2025BMJ Mental Health4 citations Open access
Semantic Scholar
Safety of direct-acting oral anticoagulant (DOAC) prescribing: OpenSAFELY-TPP analysis of 20.5 million adults’ electronic health records
K. Homan, Rachel Seeley, Louis Fisher, C. Roberts +8 more
2024BJGP open4 citations Open access
Semantic Scholar
Impact of COVID-19 on recorded blood pressure screening and hypertension management in England: an analysis of monthly changes in the quality and outcomes framework indicators in OpenSAFELY
M. Wiedemann, V. Speed, C. Cunningham, R. Higgins +30 more
2024Open Heart4 citations Open access
Semantic Scholar
Evaluation of the impact of COVID-19 pandemic on hospital admission related to common infections: Risk prediction models to tackle antimicrobial resistance in primary care
A. Fahmi, V. Palin, Xiaomin Zhong, Ya-Ting Yang +10 more
2024PLoS ONE4 citations Open access
Semantic Scholar
Incidence and treatment of group A streptococcal infections during covid-19 pandemic and 2022 outbreak: retrospective cohort study in England using OpenSAFELY-TPP
C. Cunningham, Louis Fisher, C. Wood, V. Speed +27 more
2024BMJ Medicine4 citations Open access
Semantic Scholar
Eleven key measures for monitoring general practice clinical activity during COVID-19: A retrospective cohort study using 48 million adults’ primary care records in England through OpenSAFELY
Louis Fisher, H. Curtis, R. Croker, M. Wiedemann +44 more
2023eLife4 citations Open access
Semantic Scholar
The impact of COVID-19 on medication reviews in English primary care. An OpenSAFELY-TPP analysis of 20 million adult electronic health records
T. O. Collaborative, C. Wood, V. Speed, Louis Fisher +28 more
2023medRxiv4 citations Open access
Semantic Scholar
Changes in medication safety indicators in England throughout the covid-19 pandemic using OpenSAFELY: population based, retrospective cohort study of 57 million patients using federated analytics
Louis Fisher, L. Hopcroft, Sarah Rodgers, J. Barrett +35 more
2023BMJ Medicine4 citations Open access
Semantic Scholar
Comparative effectiveness of sotrovimab and molnupiravir for preventing severe COVID-19 outcomes in patients on kidney replacement therapy: observational study using the OpenSAFELY-UKRR and SRR databases
Bang Zheng, Jacqueline Campbell, E. Carr, J. Tazare +20 more
2023Clinical Kidney Journal4 citations Open access
Semantic Scholar
Eleven key measures for monitoring general practice clinical activity during COVID-19 using federated analytics on 48 million adults' primary care records through OpenSAFELY
Louis Fisher, Helen J. Curtis, R. Croker, M. Wiedemann +43 more
2022medRxiv4 citations Open access
Semantic Scholar
O02: Risk of severe COVID‐19 outcomes associated with immune‐mediated inflammatory diseases and immune‐modifying therapies: a nationwide cohort study in the OpenSAFELY platform
E. Langan, Brian McKenna, Nicholas Kennedy, A. Mehkar +54 more
2022British Journal of Dermatology4 citations Open access
Semantic Scholar
Trends, regional variation and clinical characteristics of recipients of antivirals and neutralising monoclonal antibodies for non-hospitalised COVID-19: a descriptive cohort study of 23.4 million people in OpenSAFELY
A. Green, Helen J. Curtis, R. Higgins, Rebecca M. Smith +34 more
2022medRxiv4 citations Open access
Semantic Scholar
Impact of COVID-19 on recorded blood pressure screening and hypertension management in England: An analysis of monthly changes in Quality and Outcomes Framework indicators in OpenSAFELY
M. Wiedemann, V. Speed, C. Cunningham, R. Higgins +31 more
2023medRxiv3 citations Open access
Semantic Scholar
Implementing Germ Defence digital behaviour change intervention via all primary care practices in England to reduce respiratory infections during the COVID-19 pandemic: an efficient cluster randomised controlled trial using the OpenSAFELY platform
B. Ainsworth, Jeremy Horwood, S. Walter, Sascha Miller +86 more
2023Implementation Science3 citations Open access
Semantic Scholar

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