Catherine Orrell

8.7k total citations · 1 hit paper
159 papers, 4.9k citations indexed

About

Catherine Orrell is a scholar working on Infectious Diseases, Virology and Epidemiology. According to data from OpenAlex, Catherine Orrell has authored 159 papers receiving a total of 4.9k indexed citations (citations by other indexed papers that have themselves been cited), including 143 papers in Infectious Diseases, 66 papers in Virology and 42 papers in Epidemiology. Recurrent topics in Catherine Orrell's work include HIV/AIDS Research and Interventions (124 papers), HIV/AIDS drug development and treatment (77 papers) and HIV Research and Treatment (66 papers). Catherine Orrell is often cited by papers focused on HIV/AIDS Research and Interventions (124 papers), HIV/AIDS drug development and treatment (77 papers) and HIV Research and Treatment (66 papers). Catherine Orrell collaborates with scholars based in South Africa, United States and United Kingdom. Catherine Orrell's co-authors include Robin Wood, Linda‐Gail Bekker, Stephen D Lawn, Landon Myer, David R. Bangsberg, Richard Kaplan, Motasim Badri, Gary Maartens, Guy Harling and Andrew Boulle and has published in prestigious journals such as The Lancet, SHILAP Revista de lepidopterología and Annals of Internal Medicine.

In The Last Decade

Catherine Orrell

145 papers receiving 4.8k 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.

Guidelines for Improving Entry Into and Retention in Care and Antiretroviral Adherence for Persons With HIV: Evidence-Based Recommendations From an International Association of Physicians in AIDS Care Panel

2012 481 citations K. Rivet Amico, Catherine Orrell et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Catherine Orrell South Africa	36	4.4k	1.9k	1.9k	1.1k	655	159	4.9k
Janet Giddy South Africa	34	3.2k 0.7×	1.2k 0.6×	1.6k 0.8×	1.1k 1.0×	495 0.8×	89	3.7k
Nathan Ford Switzerland	46	4.0k 0.9×	1.2k 0.6×	2.4k 1.3×	888 0.8×	552 0.8×	117	5.4k
Gilles Van Cutsem South Africa	36	3.6k 0.8×	1.2k 0.6×	1.9k 1.0×	713 0.6×	393 0.6×	94	4.1k
Cissy Kityo Uganda	38	4.5k 1.0×	2.8k 1.5×	1.6k 0.9×	621 0.6×	735 1.1×	202	5.6k
Sam Phiri United States	31	3.0k 0.7×	1.0k 0.5×	1.2k 0.7×	1.1k 1.0×	398 0.6×	172	3.7k
H. Benjamin United States	35	3.6k 0.8×	1.3k 0.7×	1.5k 0.8×	1.4k 1.2×	927 1.4×	174	4.9k
Mhairi Maskew South Africa	34	3.1k 0.7×	1.3k 0.7×	1.6k 0.9×	773 0.7×	687 1.0×	130	3.8k
Charles B. Holmes United States	32	2.6k 0.6×	818 0.4×	1.4k 0.7×	710 0.6×	326 0.5×	103	3.3k
Morna Cornell South Africa	27	2.1k 0.5×	790 0.4×	1.0k 0.6×	773 0.7×	486 0.7×	84	2.7k
Joep J. van Oosterhout Malawi	31	2.4k 0.6×	656 0.3×	1.3k 0.7×	951 0.8×	503 0.8×	111	3.2k

Countries citing papers authored by Catherine Orrell

Since Specialization

Citations

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

Fields of papers citing papers by Catherine Orrell

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Catherine Orrell

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

Keene, Claire, Lauren Jennings, Ingrid T. Katz, et al.. (2025). Antiretroviral Therapy Adherence Interventions in the Era of Universal Test and Treat: A Hybrid Systematic-Narrative Literature Review of Global Evidence. AIDS and Behavior. 30(1). 291–306.

Bekker, Linda‐Gail, Elzette Rousseau, Caitlin M. Dugdale, et al.. (2025). Cost-effective pricing of long-acting injectable HIV pre-exposure prophylaxis for adolescent girls and young women in South Africa: a model-based analysis. The Lancet Global Health. 13(7). e1230–e1239.

Keene, Claire, Lora Sabin, Lauren Jennings, et al.. (2025). Oral antiretroviral adherence interventions in the era of U=U. The Lancet HIV. 12(8). e587–e595.

Zyl, Gert U. van, Eric Decloedt, Lauren Jennings, et al.. (2025). A Real-Time Urine Tenofovir Assay Improves Drug Adherence Among People With HIV With Prior Virologic Failure in a Randomized Controlled Trial. Clinical Infectious Diseases. 81(5). e352–e359.

Molina, Jean‐Michel, Giuliano Rizzardini, Catherine Orrell, et al.. (2024). Switch to fixed-dose doravirine (100 mg) with islatravir (0·75 mg) once daily in virologically suppressed adults with HIV-1 on antiretroviral therapy: 48-week results of a phase 3, randomised, open-label, non-inferiority trial. The Lancet HIV. 11(6). e369–e379. 10 indexed citations

Montanha, Maiara Camotti, Catherine Orrell, Henry Mugerwa, et al.. (2024). Physiologically based pharmacokinetic modeling of drug–drug interactions between ritonavir‐boosted atazanavir and rifampicin in pregnancy. CPT Pharmacometrics & Systems Pharmacology. 13(11). 1967–1977. 4 indexed citations

Musinguzi, Nicholas, Fatima Cody Stanford, Adeline A. Boatin, et al.. (2021). Association between obesity and combination antiretroviral therapy (cART) adherence among persons with early-stage HIV infection initiating cART. International Journal of Obesity. 45(8). 1855–1859. 2 indexed citations

Jennings, Lauren, Matthew A. Spinelli, Marije Van Schalkwyk, et al.. (2021). Drug Resistance, Rather than Low Tenofovir Levels in Blood or Urine, Is Associated with Tenofovir, Emtricitabine, and Efavirenz Failure in Resource-Limited Settings. AIDS Research and Human Retroviruses. 38(6). 455–462. 15 indexed citations

Castillo‐Mancilla, José, Nicholas Musinguzi, Stephen Asiimwe, et al.. (2021). High residual inflammation despite HIV viral suppression: Lessons learned from real‐time adherence monitoring among people with HIV in Africa. HIV Medicine. 23(5). 465–473. 8 indexed citations

10.

Katz, Ingrid T., Laura M. Bogart, Garrett M. Fitzmaurice, et al.. (2020). The Treatment Ambassador Program: A Highly Acceptable and Feasible Community-Based Peer Intervention for South Africans Living with HIV Who Delay or Discontinue Antiretroviral Therapy. AIDS and Behavior. 25(4). 1129–1143. 12 indexed citations

11.

Bekker, Linda‐Gail, Dvora Joseph Davey, Katherine Gill, et al.. (2020). Southern African guidelines on the safe, easy and effective use of pre-exposure prophylaxis: 2020. Southern African Journal of HIV Medicine. 21(1). 1152–1152. 28 indexed citations

12.

Orrell, Catherine, et al.. (2017). Factors that Motivated Otherwise Healthy HIV-Positive Young Adults to Access HIV Testing and Treatment in South Africa. AIDS and Behavior. 22(3). 733–741. 27 indexed citations

13.

Katz, Ingrid T., Richard Kaplan, Garrett M. Fitzmaurice, et al.. (2017). Treatment guidelines and early loss from care for people living with HIV in Cape Town, South Africa: A retrospective cohort study. PLoS Medicine. 14(11). e1002434–e1002434. 17 indexed citations

14.

Yong, Chan‐Loi, Joseph Gathe, Catherine Orrell, et al.. (2017). Pharmacokinetic analysis of nevirapine extended release 400 mg once daily vs nevirapine immediate release 200 mg twice daily formulation in treatment-naïve patients with HIV-1 infection. HIV Clinical Trials. 18(5-6). 189–195. 3 indexed citations

15.

Orrell, Catherine, Julie H. Levison, Andrea Ciaranello, et al.. (2013). Resistance in Pediatric Patients Experiencing Virologic Failure With First-line and Second-line Antiretroviral Therapy. The Pediatric Infectious Disease Journal. 32(6). 644–647. 17 indexed citations

16.

Orrell, Catherine. (2011). Antiretroviral adverse drug reactions and their management : main article. 29(6). 234–237. 2 indexed citations

17.

Orrell, Catherine. (2011). Antiretroviral adverse drug reactions and their management: How to recognise, manage and avoid adverse effects of antiretrovirals. CME/Continuing medical education. 29(6). 2 indexed citations

18.

Jaspan, Heather B., et al.. (2011). Effect of Caregivers' Depression and Alcohol Use on Child Antiretroviral Adherence in South Africa. AIDS Patient Care and STDs. 25(10). 595–600. 13 indexed citations

19.

Orrell, Catherine. (2011). Antiretroviral adverse drug reactions and their management.. CME/Continuing medical education. 29(6). 234–237. 4 indexed citations

20.

Lawn, Stephen D, Francesca Little, Linda‐Gail Bekker, et al.. (2009). Changing mortality risk associated with CD4 cell response to antiretroviral therapy in South Africa. AIDS. 23(3). 335–342. 108 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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