Mary Ramsay

45.0k total citations · 7 hit papers
457 papers, 20.9k citations indexed

About

Mary Ramsay is a scholar working on Epidemiology, Microbiology and Infectious Diseases. According to data from OpenAlex, Mary Ramsay has authored 457 papers receiving a total of 20.9k indexed citations (citations by other indexed papers that have themselves been cited), including 317 papers in Epidemiology, 144 papers in Microbiology and 107 papers in Infectious Diseases. Recurrent topics in Mary Ramsay's work include Bacterial Infections and Vaccines (143 papers), Pneumonia and Respiratory Infections (127 papers) and Vaccine Coverage and Hesitancy (91 papers). Mary Ramsay is often cited by papers focused on Bacterial Infections and Vaccines (143 papers), Pneumonia and Respiratory Infections (127 papers) and Vaccine Coverage and Hesitancy (91 papers). Mary Ramsay collaborates with scholars based in United Kingdom, Australia and Maldives. Mary Ramsay's co-authors include Nick Andrews, Shamez Ladhani, Caroline Trotter, Elizabeth Miller, Helen Campbell, Gayatri Amirthalingam, Ray Borrow, Jamie Lopez Bernal, Mary Slack and Joanne White and has published in prestigious journals such as Science, New England Journal of Medicine and The Lancet.

In The Last Decade

Mary Ramsay

446 papers receiving 20.1k citations

Hit Papers

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What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant

2021 1.7k citations Jamie Lopez Bernal, Nick Andrews et al. profile →
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

2021 744 citations Jamie Lopez Bernal, Nick Andrews et al. profile →
Global epidemiology of meningococcal disease

2009 581 citations Caroline Trotter, Mary Ramsay et al. Vaccine profile →
Effectiveness of maternal pertussis vaccination in England: an observational study

2014 529 citations Gayatri Amirthalingam, Nick Andrews et al. profile →
Rapid increase in non-vaccine serotypes causing invasive pneumococcal disease in England and Wales, 2000–17: a prospective national observational cohort study

2018 372 citations Shamez Ladhani, Ray Borrow et al. The Lancet Infectious Diseases profile →
Effectiveness of one dose of MVA–BN smallpox vaccine against mpox in England using the case-coverage method: an observational study

2023 87 citations Nick Andrews, Sema Mandal et al. The Lancet Infectious Diseases profile →
Invasive pneumococcal disease 3 years after introduction of a reduced 1 + 1 infant 13-valent pneumococcal conjugate vaccine immunisation schedule in England: a prospective national observational surveillance study

2024 49 citations Nick Andrews, Mary Ramsay et al. The Lancet Infectious Diseases profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
Mary Ramsay	13.2k	7.7k	6.3k	4.5k	2.2k	457	20.9k
Nick Andrews	12.0k 0.9×	5.6k 0.7×	5.9k 0.9×	3.4k 0.8×	552 0.3×	401	19.5k
Elizabeth Miller	14.6k 1.1×	7.1k 0.9×	3.3k 0.5×	2.5k 0.6×	462 0.2×	324	18.7k
Pierre Van Damme	9.9k 0.8×	1.8k 0.2×	5.4k 0.9×	3.2k 0.7×	5.6k 2.6×	563	16.7k
Kathryn M. Edwards	21.2k 1.6×	5.6k 0.7×	10.5k 1.7×	2.7k 0.6×	862 0.4×	557	31.2k
Lauri E. Markowitz	23.8k 1.8×	5.0k 0.7×	4.0k 0.6×	8.7k 1.9×	801 0.4×	383	32.5k
Shabir A. Madhi	14.2k 1.1×	2.2k 0.3×	6.9k 1.1×	1.7k 0.4×	1.1k 0.5×	571	20.5k
Arthur Reingold	17.8k 1.4×	6.2k 0.8×	8.2k 1.3×	1.3k 0.3×	832 0.4×	300	27.7k
Lisa A. Jackson	10.2k 0.8×	3.2k 0.4×	3.1k 0.5×	2.4k 0.5×	392 0.2×	280	17.3k
Robert Booy	5.8k 0.4×	2.3k 0.3×	2.9k 0.5×	1.8k 0.4×	356 0.2×	317	12.5k
Scott A. Halperin	8.6k 0.7×	6.1k 0.8×	2.8k 0.4×	2.2k 0.5×	477 0.2×	422	13.2k

Countries citing papers authored by Mary Ramsay

Since Specialization

Citations

This map shows the geographic impact of Mary Ramsay's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Mary Ramsay with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Mary Ramsay more than expected).

Fields of papers citing papers by Mary Ramsay

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Mary Ramsay. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Mary Ramsay. The network helps show where Mary Ramsay may publish in the future.

Co-authorship network of co-authors of Mary Ramsay

This figure shows the co-authorship network connecting the top 25 collaborators of Mary Ramsay. A scholar is included among the top collaborators of Mary Ramsay based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Mary Ramsay. Mary Ramsay is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Isitt, Catherine, Helen Campbell, Catherine A. Cosgrove, et al.. (2025). Risk of invasive meningococcal disease in people with sickle cell disease: A systematic review. Journal of Infection. 90(3). 106441–106441. 1 indexed citations

Ramsay, Mary, et al.. (2024). Estimating the potential number of cases prevented by infant/ toddler immunisation with a MenACWY vaccine. Vaccine. 42(23). 126240–126240. 1 indexed citations

Kirsebom, Freja, Nick Andrews, Anna Mensah, et al.. (2024). Vaccine effectiveness against mild and severe covid-19 in pregnant individuals and their infants in England: test negative case-control study. SHILAP Revista de lepidopterología. 3(1). e000696–e000696. 2 indexed citations

Kirsebom, Freja, Nick Andrews, Julia Stowe, et al.. (2024). Effectiveness of the Sanofi/GSK (VidPrevtyn Beta) and Pfizer-BioNTech (Comirnaty Original/Omicron BA.4-5) bivalent vaccines against hospitalisation in England. EClinicalMedicine. 71. 102587–102587. 6 indexed citations

Akeju, Oluwasefunmi, Emily A. Lees, Gayatri Amirthalingam, Mary Ramsay, & Andrew J. Pollard. (2024). Changes to the UK childhood immunisation schedule. Archives of Disease in Childhood. 110(3). 180–187. 1 indexed citations

Kirsebom, Freja, Nick Andrews, Julia Stowe, Mary Ramsay, & Jamie Lopez Bernal. (2023). Duration of protection of ancestral-strain monovalent vaccines and effectiveness of bivalent BA.1 boosters against COVID-19 hospitalisation in England: a test-negative case-control study. The Lancet Infectious Diseases. 23(11). 1235–1243. 32 indexed citations

Dowell, Alexander C., Gokhan Tut, Jusnara Begum, et al.. (2023). Nasal mucosal IgA levels against SARS-CoV-2 and seasonal coronaviruses are low in children but boosted by reinfection. Journal of Infection. 87(5). 403–412. 4 indexed citations

Kirsebom, Freja, Katie Harman, Nick Andrews, et al.. (2023). Vaccine effectiveness against hospitalisation estimated using a test-negative case-control study design, and comparative odds of hospital admission and severe outcomes with COVID-19 sub-lineages BQ.1, CH.1.1. and XBB.1.5 in England. The Lancet Regional Health - Europe. 35. 100755–100755. 15 indexed citations

Quinot, Catherine, Freja Kirsebom, Nick Andrews, et al.. (2023). The impact of vaccination and SARS-CoV-2 variants on the virological response to SARS-CoV-2 infections during the Alpha, Delta, and Omicron waves in England. Journal of Infection. 88(1). 21–29. 8 indexed citations

10.

Westrop, Samantha J., Heather Whitaker, Annabel Powell, et al.. (2022). Real-world data on immune responses following heterologous prime-boost COVID-19 vaccination schedule with Pfizer and AstraZeneca vaccines in England. Journal of Infection. 84(5). 692–700. 13 indexed citations

11.

Kirsebom, Freja, et al.. (2022). Effectiveness of ChAdOx1-S COVID-19 booster vaccination against the Omicron and Delta variants in England. Nature Communications. 13(1). 7688–7688. 27 indexed citations

12.

Stowe, Julia, Elise Tessier, Hongxin Zhao, et al.. (2021). Interactions between SARS-CoV-2 and influenza, and the impact of coinfection on disease severity: a test-negative design. International Journal of Epidemiology. 50(4). 1124–1133. 154 indexed citations

13.

Verberk, Janneke D. M., Jan van de Kassteele, Nick Andrews, et al.. (2021). Impact analysis of rotavirus vaccination in various geographic regions in Western Europe. Vaccine. 39(45). 6671–6681. 8 indexed citations

14.

Sandmann, Frank, Mark Jit, Nick Andrews, et al.. (2021). Evaluating the impact of a continued maternal pertussis immunisation programme in England: A modelling study and cost-effectiveness analysis. Vaccine. 39(32). 4500–4509. 5 indexed citations

15.

Reyes, Saúl, Mary Ramsay, Shamez Ladhani, et al.. (2020). Protecting people with multiple sclerosis through vaccination. Practical Neurology. 20(6). 435.1–445. 36 indexed citations

16.

Lang, Sarah, et al.. (2019). Two centuries of immunisation in the UK (part II). Archives of Disease in Childhood. 105(3). 216–222. 6 indexed citations

17.

Harris, Ross, H Harris, Sema Mandal, et al.. (2019). Monitoring the hepatitis C epidemic in England and evaluating intervention scale‐up using routinely collected data. Journal of Viral Hepatitis. 26(5). 541–551. 31 indexed citations

18.

Trotter, Caroline, W. John Edmunds, Mary Ramsay, & Elizabeth Miller. (2006). Modeling Future Changes to the Meningococcal Serogroup C Conjugate (MCC) Vaccine Program in England and Wales. Human Vaccines. 2(2). 68–73. 24 indexed citations

19.

Reacher, Mark, Mary Ramsay, Joanne White, et al.. (2000). Nontoxigenic Corynebacterium diphtheriae: An Emerging Pathogen in England and Wales?. Emerging infectious diseases. 6(6). 640–645. 2 indexed citations

20.

Nicoll, A & Mary Ramsay. (1995). Adverse Events Associated with Childhood Vaccines: Evidence Bearing on Causality. BMJ. 310(6987). 1147.1–1147.1. 45 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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