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Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant.
Lopez Bernal J, Andrews N, Gower C, Gallagher E, Simmons R, Thelwall S, Stowe J, Tessier E, Groves N, Dabrera G, Myers R, Campbell CNJ, Amirthalingam G, Edmunds M, Zambon M, Brown KE, Hopkins S, Chand M, Ramsay M. Lopez Bernal J, et al. Among authors: simmons r. N Engl J Med. 2021 Aug 12;385(7):585-594. doi: 10.1056/NEJMoa2108891. Epub 2021 Jul 21. N Engl J Med. 2021. PMID: 34289274 Free PMC article.
Effectiveness of the Pfizer-BioNTech and Oxford-AstraZeneca vaccines on covid-19 related symptoms, hospital admissions, and mortality in older adults in England: test negative case-control study.
Lopez Bernal J, Andrews N, Gower C, Robertson C, Stowe J, Tessier E, Simmons R, Cottrell S, Roberts R, O'Doherty M, Brown K, Cameron C, Stockton D, McMenamin J, Ramsay M. Lopez Bernal J, et al. Among authors: simmons r. BMJ. 2021 May 13;373:n1088. doi: 10.1136/bmj.n1088. BMJ. 2021. PMID: 33985964 Free PMC article.
Duration of Protection against Mild and Severe Disease by Covid-19 Vaccines.
Andrews N, Tessier E, Stowe J, Gower C, Kirsebom F, Simmons R, Gallagher E, Thelwall S, Groves N, Dabrera G, Myers R, Campbell CNJ, Amirthalingam G, Edmunds M, Zambon M, Brown K, Hopkins S, Chand M, Ladhani SN, Ramsay M, Lopez Bernal J. Andrews N, et al. Among authors: simmons r. N Engl J Med. 2022 Jan 27;386(4):340-350. doi: 10.1056/NEJMoa2115481. Epub 2022 Jan 12. N Engl J Med. 2022. PMID: 35021002 Free PMC article.
The impact of social and physical distancing measures on COVID-19 activity in England: findings from a multi-tiered surveillance system.
Bernal JL, Sinnathamby MA, Elgohari S, Zhao H, Obi C, Coughlan L, Lampos V, Simmons R, Tessier E, Campbell H, McDonald S, Ellis J, Hughes H, Smith G, Joy M, Tripathy M, Byford R, Ferreira F, de Lusignan S, Zambon M, Dabrera G, Brown K, Saliba V, Andrews N, Amirthalingam G, Mandal S, Edelstein M, Elliot AJ, Ramsay M. Bernal JL, et al. Among authors: simmons r. Euro Surveill. 2021 Mar;26(11):2001062. doi: 10.2807/1560-7917.ES.2021.26.11.2001062. Euro Surveill. 2021. PMID: 33739255 Free PMC article.
SARS-CoV-2 infection rates of antibody-positive compared with antibody-negative health-care workers in England: a large, multicentre, prospective cohort study (SIREN).
Hall VJ, Foulkes S, Charlett A, Atti A, Monk EJM, Simmons R, Wellington E, Cole MJ, Saei A, Oguti B, Munro K, Wallace S, Kirwan PD, Shrotri M, Vusirikala A, Rokadiya S, Kall M, Zambon M, Ramsay M, Brooks T, Brown CS, Chand MA, Hopkins S; SIREN Study Group. Hall VJ, et al. Among authors: simmons r. Lancet. 2021 Apr 17;397(10283):1459-1469. doi: 10.1016/S0140-6736(21)00675-9. Epub 2021 Apr 9. Lancet. 2021. PMID: 33844963 Free PMC article.
Disease severity during SARS-COV-2 reinfection: a nationwide study.
Mensah AA, Lacy J, Stowe J, Seghezzo G, Sachdeva R, Simmons R, Bukasa A, O'Boyle S, Andrews N, Ramsay M, Campbell H, Brown K. Mensah AA, et al. Among authors: simmons r. J Infect. 2022 Apr;84(4):542-550. doi: 10.1016/j.jinf.2022.01.012. Epub 2022 Jan 25. J Infect. 2022. PMID: 35085659 Free PMC article.
Real-world data on immune responses following heterologous prime-boost COVID-19 vaccination schedule with Pfizer and AstraZeneca vaccines in England.
Westrop SJ, Whitaker HJ, Powell AA, Power L, Whillock C, Campbell H, Simmons R, Warrener L, Ramsay ME, Ladhani SN, Brown KE, Amirthalingam G. Westrop SJ, et al. Among authors: simmons r. J Infect. 2022 May;84(5):692-700. doi: 10.1016/j.jinf.2022.01.038. Epub 2022 Feb 4. J Infect. 2022. PMID: 35131335 Free PMC article.
Risk of SARS-CoV-2 reinfections in children: a prospective national surveillance study between January, 2020, and July, 2021, in England.
Mensah AA, Campbell H, Stowe J, Seghezzo G, Simmons R, Lacy J, Bukasa A, O'Boyle S, Ramsay ME, Brown K, Ladhani SN. Mensah AA, et al. Among authors: simmons r. Lancet Child Adolesc Health. 2022 Jun;6(6):384-392. doi: 10.1016/S2352-4642(22)00059-1. Epub 2022 Mar 28. Lancet Child Adolesc Health. 2022. PMID: 35358491 Free PMC article.
SARS-CoV-2 infections in children following the full re-opening of schools and the impact of national lockdown: Prospective, national observational cohort surveillance, July-December 2020, England.
Mensah AA, Sinnathamby M, Zaidi A, Coughlan L, Simmons R, Ismail SA, Ramsay ME, Saliba V, Ladhani SN. Mensah AA, et al. Among authors: simmons r. J Infect. 2021 Apr;82(4):67-74. doi: 10.1016/j.jinf.2021.02.022. Epub 2021 Feb 25. J Infect. 2021. PMID: 33639175 Free PMC article.
2,300 results