Publications by authors named "Simon Thelwall"

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Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant.
Jamie Lopez Bernal, Nick Andrews, Charlotte Gower, Eileen Gallagher, Ruth Simmons, Simon Thelwall, Julia Stowe, Elise Tessier, Natalie Groves, Gavin Dabrera

August 2021

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Incidence, case-fatality rates and risk factors of bloodstream infections caused by , species and , England, April 2017 to March 2022.
Olisaeloka Nsonwu, Simon Thelwall, Sarah Gerver, Rebecca L Guy, Dimple Chudasama

Euro Surveill· May 2025

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Epidemiology of invasive disease in adults in England, 2013-2017.
Maxim Blum, Jeroen Geurtsen, Eva Herweijer, Michal Sarnecki, Bart Spiessens, Simon Thelwall

Epidemiol Infect· January 2025

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Descriptive Epidemiology of Travel and Non-Travel Related SARS-CoV-2 Gamma (P.1/501Y.V3) Variant Cases in England, 2021.
Nurin Abdul Aziz, Katherine Twohig, Mary Sinnathamby, Asad Zaidi, Shirin Aliabadi, Simon Thelwall

Influenza Other Respir Viruses· May 2024

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COVID-19 therapeutics: stewardship in England and considerations for antimicrobial resistance.
Sabine Bou-Antoun, Sakib Rokadiya, Diane Ashiru-Oredope, Alicia Demirjian, Emma Sherwood, Simon Thelwall

J Antimicrob Chemother· November 2023

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Descriptive epidemiology of SARS-CoV-2 Beta (B.1.351) variant cases in England, December 2020 to June 2022.
Mary A Sinnathamby, Asad Zaidi, Katherine A Twohig, Shirin Aliabadi, Nurin Abdul Aziz, Simon Thelwall

Influenza Other Respir Viruses· November 2023

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Risk of severe outcomes among Omicron sub-lineages BA.4.6, BA.2.75, and BQ.1 compared to BA.5 in England.
Giulia Seghezzo, Sophie G Nash, Nurin A Aziz, Russell Hope, Jamie L Bernal, Simon Thelwall

Epidemiol Infect· October 2023

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A standardised protocol for relative SARS-CoV-2 variant severity assessment, applied to Omicron BA.1 and Delta in six European countries, October 2021 to February 2022.
Tommy Nyberg, Peter Bager, Ingrid Bech Svalgaard, Dritan Bejko, Nick Bundle, Simon Thelwall

Euro Surveill· September 2023

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Representativeness of whole-genome sequencing approaches in England: the importance for understanding inequalities associated with SARS-CoV-2 infection.
Katherine A Twohig, Katie Harman, Asad Zaidi, Shirin Aliabadi, Sophie G Nash, Simon Thelwall

Epidemiol Infect· September 2023

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Risk of severe outcomes among SARS-CoV-2 Omicron BA.4 and BA.5 cases compared to BA.2 cases in England.
Nurin Abdul Aziz, Sophie Grace Nash, Asad Zaidi, Tommy Nyberg, Natalie Groves, Simon Thelwall

J Infect· July 2023

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Comparison of the risk of hospitalisation among BA.1 and BA.2 COVID-19 cases treated with sotrovimab in the community in England.
Katie Harman, Sophie Grace Nash, Harriet H Webster, Natalie Groves, Jo Hardstaff, Simon Thelwall

Influenza Other Respir Viruses· May 2023

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Comparative transmission of SARS-CoV-2 Omicron (B.1.1.529) and Delta (B.1.617.2) variants and the impact of vaccination: national cohort study, England.
Hester Allen, Elise Tessier, Charlie Turner, Charlotte Anderson, Paula Blomquist, Simon Thelwall

Epidemiol Infect· March 2023

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Context-specific emergence and growth of the SARS-CoV-2 Delta variant.
John T McCrone, Verity Hill, Sumali Bajaj, Rosario Evans Pena, Ben C Lambert, Simon Thelwall

Nature· October 2022

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Hospitalization and Mortality Risk for COVID-19 Cases With SARS-CoV-2 AY.4.2 (VUI-21OCT-01) Compared to Non-AY.4.2 Delta Variant Sublineages.
Tommy Nyberg, Katie Harman, Asad Zaidi, Shaun R Seaman, Nick Andrews, Simon Thelwall

J Infect Dis· September 2022

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Misclassification bias in estimating clinical severity of SARS-CoV-2 variants - Authors' reply.
Tommy Nyberg, Neil M Ferguson, Joshua Blake, Wes Hinsley, Samir Bhatt, Simon Thelwall

Lancet· September 2022

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Risk of hospitalisation and death in children with SARS-CoV-2 delta (B.1.612.2) infection.
Simon Thelwall, Felicity Aiano, Katie Harman, Gavin Dabrera, Shamez N Ladhani

Lancet Child Adolesc Health· May 2022

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Assessment of mortality and hospital admissions associated with confirmed infection with SARS-CoV-2 Alpha variant: a matched cohort and time-to-event analysis, England, October to December 2020.
Gavin Dabrera, Hester Allen, Asad Zaidi, Joe Flannagan, Katherine Twohig, Simon Thelwall

Euro Surveill· May 2022

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Covid-19 Vaccine Effectiveness against the Omicron (B.1.1.529) Variant.
Nick Andrews, Julia Stowe, Freja Kirsebom, Samuel Toffa, Tim Rickeard, Simon Thelwall

N Engl J Med· April 2022

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Comparative analysis of the risks of hospitalisation and death associated with SARS-CoV-2 omicron (B.1.1.529) and delta (B.1.617.2) variants in England: a cohort study.
Tommy Nyberg, Neil M Ferguson, Sophie G Nash, Harriet H Webster, Seth Flaxman, Simon Thelwall

Lancet· April 2022

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Hospital admission and emergency care attendance risk for SARS-CoV-2 delta (B.1.617.2) compared with alpha (B.1.1.7) variants of concern: a cohort study.
Katherine A Twohig, Tommy Nyberg, Asad Zaidi, Simon Thelwall, Mary A Sinnathamby

Lancet Infect Dis· January 2022

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Duration of Protection against Mild and Severe Disease by Covid-19 Vaccines.
Nick Andrews, Elise Tessier, Julia Stowe, Charlotte Gower, Freja Kirsebom, Simon Thelwall

N Engl J Med· January 2022

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Surge in SARS-CoV-2 transmission in school-aged children and household contacts, England, August to October 2021.
Dimple Y Chudasama, Elise Tessier, Joe Flannagan, David Leeman, Harriet Webster, Simon Thelwall

Euro Surveill· December 2021

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Context-specific emergence and growth of the SARS-CoV-2 Delta variant.
John T McCrone, Verity Hill, Sumali Bajaj, Rosario Evans Pena, Ben C Lambert, Simon Thelwall

Res Sq· December 2021

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Context-specific emergence and growth of the SARS-CoV-2 Delta variant.
John T McCrone, Verity Hill, Sumali Bajaj, Rosario Evans Pena, Ben C Lambert, Simon Thelwall

medRxiv· December 2021

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Healthcare-associated COVID-19 in England: A national data linkage study.
Alex Bhattacharya, Simon M Collin, James Stimson, Simon Thelwall, Olisaeloka Nsonwu

J Infect· November 2021

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National surveillance of bacterial and fungal coinfection and secondary infection in COVID-19 patients in England: lessons from the first wave.
Sarah M Gerver, Rebecca Guy, Kate Wilson, Simon Thelwall, Olisaeloka Nsonwu

Clin Microbiol Infect· November 2021

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