Oliver Ratmann

8.5k total citations · 1 hit paper
55 papers, 1.5k citations indexed

About

Oliver Ratmann is a scholar working on Epidemiology, Infectious Diseases and Virology. According to data from OpenAlex, Oliver Ratmann has authored 55 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Epidemiology, 20 papers in Infectious Diseases and 16 papers in Virology. Recurrent topics in Oliver Ratmann's work include HIV Research and Treatment (16 papers), HIV/AIDS Research and Interventions (16 papers) and HIV, Drug Use, Sexual Risk (13 papers). Oliver Ratmann is often cited by papers focused on HIV Research and Treatment (16 papers), HIV/AIDS Research and Interventions (16 papers) and HIV, Drug Use, Sexual Risk (13 papers). Oliver Ratmann collaborates with scholars based in United Kingdom, United States and Denmark. Oliver Ratmann's co-authors include Katia Koelle, Ha Minh Lam, Maciej F. Boni, Christophe Fraser, Carsten Wiuf, David A. Rasmussen, Seth Flaxman, Sylvia Richardson, H. Juliette T. Unwin and Samir Bhatt and has published in prestigious journals such as Proceedings of the National Academy of Sciences, The Lancet and Nature Medicine.

In The Last Decade

Oliver Ratmann

51 papers receiving 1.5k citations

Hit Papers

align trajectories

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.

Global minimum estimates of children affected by COVID-19-associated orphanhood and deaths of caregivers: a modelling study

2021 141 citations Susan D. Hillis, H. Juliette T. Unwin et al. The Lancet profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Oliver Ratmann United Kingdom	21	484	333	244	214	178	55	1.5k
Matthew Hall United Kingdom	12	311 0.6×	231 0.7×	124 0.5×	142 0.7×	106 0.6×	24	1.1k
Ethan Romero-Severson United States	18	964 2.0×	376 1.1×	273 1.1×	143 0.7×	181 1.0×	48	1.9k
Ralf Reintjes Germany	23	453 0.9×	451 1.4×	79 0.3×	119 0.6×	275 1.5×	82	1.6k
Abdulsalami Nasidi Nigeria	23	554 1.1×	394 1.2×	362 1.5×	114 0.5×	145 0.8×	44	1.5k
Anders Tegnell Sweden	23	614 1.3×	682 2.0×	110 0.5×	125 0.6×	337 1.9×	71	2.0k
Jin Zhao China	22	1.1k 2.2×	474 1.4×	223 0.9×	56 0.3×	228 1.3×	95	1.7k
Ruian Ke United States	21	1.2k 2.4×	393 1.2×	246 1.0×	142 0.7×	277 1.6×	55	2.3k
Lucille Blumberg South Africa	26	879 1.8×	718 2.2×	420 1.7×	142 0.7×	185 1.0×	114	2.2k
Forrest W. Crawford United States	22	688 1.4×	465 1.4×	41 0.2×	104 0.5×	178 1.0×	70	2.2k
Jantien A. Backer Netherlands	22	969 2.0×	375 1.1×	152 0.6×	200 0.9×	186 1.0×	57	2.2k

Countries citing papers authored by Oliver Ratmann

Since Specialization

Citations

This map shows the geographic impact of Oliver Ratmann'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 Oliver Ratmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Oliver Ratmann more than expected).

Fields of papers citing papers by Oliver Ratmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Oliver Ratmann. 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 Oliver Ratmann. The network helps show where Oliver Ratmann may publish in the future.

Co-authorship network of co-authors of Oliver Ratmann

This figure shows the co-authorship network connecting the top 25 collaborators of Oliver Ratmann. A scholar is included among the top collaborators of Oliver Ratmann 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 Oliver Ratmann. Oliver Ratmann 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

Villaveces, Andrés, Yu Chen, Alexandra Blenkinsop, et al.. (2025). Orphanhood and caregiver death among children in the United States by all-cause mortality, 2000–2021. Nature Medicine. 31(2). 672–683. 2 indexed citations

Blenkinsop, Alexandra, Evangelia Georgia Kostaki, Ard van Sighem, et al.. (2024). Sources of Human Immunodeficiency Virus Infections Among Men Who Have Sex With Men With a Migration Background: A Viral Phylogenetic Case Study in Amsterdam, The Netherlands. The Journal of Infectious Diseases. 230(4). e881–e894.

Kigozi, Godfrey, Michael A. Martin, Ronald M. Galiwango, et al.. (2024). Intra- and inter-subtype HIV diversity between 1994 and 2018 in southern Uganda: a longitudinal population-based study. Virus Evolution. 10(1). veae065–veae065. 1 indexed citations

Hillis, Susan D., Philip Goldman, Seth Flaxman, et al.. (2024). The effectiveness of Hope Groups, a mental health, parenting support, and violence prevention program for families affected by the war in Ukraine: Findings from a pre-post study. Journal of Migration and Health. 10. 100251–100251. 3 indexed citations

Ratmann, Oliver, Seth Flaxman, Jamie M. Lachman, et al.. (2024). Hope Groups: a protocol for a cluster randomized controlled trial of psychosocial, mental health, and parenting support groups for Ukrainian caregivers during war and conflict. Trials. 25(1). 486–486. 1 indexed citations

Rosen, Joseph G., Steven J. Reynolds, Ronald M. Galiwango, et al.. (2023). A moving target: impacts of lowering viral load suppression cutpoints on progress towards HIV epidemic control goals. AIDS. 37(9). 1486–1489. 2 indexed citations

Flaxman, Seth, Charles A. Whittaker, Elizaveta Semenova, et al.. (2023). Assessment of COVID-19 as the Underlying Cause of Death Among Children and Young People Aged 0 to 19 Years in the US. JAMA Network Open. 6(1). e2253590–e2253590. 60 indexed citations

Penn, Matthew J., Daniel J. Laydon, Joseph V. Penn, et al.. (2023). Intrinsic randomness in epidemic modelling beyond statistical uncertainty. Communications Physics. 6(1). 146–146. 5 indexed citations

Unwin, H. Juliette T., Susan D. Hillis, Lucie Cluver, et al.. (2022). Global, regional, and national minimum estimates of children affected by COVID-19-associated orphanhood and caregiver death, by age and family circumstance up to Oct 31, 2021: an updated modelling study. The Lancet Child & Adolescent Health. 6(4). 249–259. 44 indexed citations

10.

Hillis, Susan D., Lucie Cluver, Lorraine Sherr, et al.. (2021). Under the Radar: Global Minimum Estimates for COVID-19-associated Orphanhood and Deaths among Caregivers. The Lancet. 2 indexed citations

11.

Mishra, Swapnil, James A. Scott, Daniel J. Laydon, et al.. (2021). Comparing the responses of the UK, Sweden and Denmark to COVID-19 using counterfactual modelling. Scientific Reports. 11(1). 16342–16342. 36 indexed citations

12.

Bbosa, Nicholas, Deogratius Ssemwanga, Xiaoyue Xi, et al.. (2020). Phylogenetic and Demographic Characterization of Directed HIV-1 Transmission Using Deep Sequences from High-Risk and General Population Cohorts/Groups in Uganda. Viruses. 12(3). 331–331. 13 indexed citations

13.

Ratmann, Oliver, M. Kate Grabowski, Molly A. Hall, et al.. (2019). High prevalence fishing communities are not a major source of new HIV infections to the inland populations in Rakai District, Uganda: implications for geo-spatially targeted HIV prevention interventions. Journal of the International AIDS Society. 21. 70–71. 1 indexed citations

14.

Vu, Stéphane Le, Oliver Ratmann, Valérie Delpech, et al.. (2019). HIV-1 Transmission Patterns in Men Who Have Sex with Men: Insights from Genetic Source Attribution Analysis. AIDS Research and Human Retroviruses. 35(9). 805–813. 8 indexed citations

15.

Ratmann, Oliver, et al.. (2019). Phylogenies from dynamic networks. PLoS Computational Biology. 15(2). e1006761–e1006761. 13 indexed citations

16.

Lachlan, Robert F., Oliver Ratmann, & Stephen Nowicki. (2018). Cultural conformity generates extremely stable traditions in bird song. Nature Communications. 9(1). 2417–2417. 78 indexed citations

17.

Lamers, Susanna L., Oliver Ratmann, Christophe Fraser, et al.. (2016). HIV-1 Sequence Data Coverage in Central East Africa from 1959 to 2013. AIDS Research and Human Retroviruses. 32(9). 904–908. 1 indexed citations

18.

Wilkinson, Eduan, David A. Rasmussen, Oliver Ratmann, et al.. (2016). Origin, imports and exports of HIV-1 subtype C in South Africa: A historical perspective. Infection Genetics and Evolution. 46. 200–208. 17 indexed citations

19.

Bezemer, Daniela, Anne Cori, Oliver Ratmann, et al.. (2015). Dispersion of the HIV-1 Epidemic in Men Who Have Sex with Men in the Netherlands: A Combined Mathematical Model and Phylogenetic Analysis. PLoS Medicine. 12(11). e1001898–e1001898. 81 indexed citations

20.

Pillay, Deenan, Joshua T. Herbeck, Myron S. Cohen, et al.. (2015). PANGEA-HIV: phylogenetics for generalised epidemics in Africa. The Lancet Infectious Diseases. 15(3). 259–261. 27 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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