Jan Fehr

12.0k total citations · 4 hit papers
195 papers, 5.7k citations indexed

About

Jan Fehr is a scholar working on Infectious Diseases, Epidemiology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Jan Fehr has authored 195 papers receiving a total of 5.7k indexed citations (citations by other indexed papers that have themselves been cited), including 101 papers in Infectious Diseases, 65 papers in Epidemiology and 26 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Jan Fehr's work include HIV/AIDS drug development and treatment (37 papers), HIV/AIDS Research and Interventions (35 papers) and Hepatitis C virus research (23 papers). Jan Fehr is often cited by papers focused on HIV/AIDS drug development and treatment (37 papers), HIV/AIDS Research and Interventions (35 papers) and Hepatitis C virus research (23 papers). Jan Fehr collaborates with scholars based in Switzerland, United States and Uganda. Jan Fehr's co-authors include HS Jacob, René Moser, A P Dalmasso, P R Craddock, B Schleiffenbaum, Clemens A. Dahinden, Peter Groscurth, P.L.B. Bruijnzeel, Milo A. Puhan and Tala Ballouz and has published in prestigious journals such as The Lancet, Journal of Clinical Investigation and Nature Communications.

In The Last Decade

Jan Fehr

182 papers receiving 5.5k citations

Hit Papers

Hemodialysis leukopenia. Pulmonary vascular leukostasis r... 1977 2026 1993 2009 1977 2014 2021 2023 250 500 750
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.

  1. Hemodialysis leukopenia. Pulmonary vascular leukostasis resulting from complement activation by dialyzer cellophane membranes.
    1977 769 citations Jan Fehr et al. profile →
  2. Once-daily dolutegravir versus darunavir plus ritonavir in antiretroviral-naive adults with HIV-1 infection (FLAMINGO): 48 week results from the randomised open-label phase 3b study
    2014 350 citations Jan Fehr et al. profile →
  3. Burden of post-COVID-19 syndrome and implications for healthcare service planning: A population-based cohort study
    2021 196 citations Dominik Menges, Tala Ballouz et al. PLoS ONE profile →
  4. Recovery and symptom trajectories up to two years after SARS-CoV-2 infection: population based, longitudinal cohort study
    2023 94 citations Tala Ballouz, Dominik Menges et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Jan Fehr Switzerland 38 2.0k 1.4k 879 581 538 195 5.7k
Susanne Dam Nielsen Denmark 35 1.5k 0.7× 1.2k 0.8× 777 0.9× 980 1.7× 858 1.6× 291 5.5k
M. Ho Hong Kong 44 1.5k 0.7× 2.7k 1.9× 1.3k 1.4× 346 0.6× 467 0.9× 171 7.3k
Nicola P. Klein United States 52 2.8k 1.3× 5.5k 3.9× 715 0.8× 270 0.5× 711 1.3× 295 10.0k
Hong Zhang China 40 1.7k 0.8× 1.6k 1.2× 499 0.6× 381 0.7× 1.7k 3.1× 252 5.5k
David Jeffries United Kingdom 42 1.8k 0.9× 2.1k 1.5× 948 1.1× 319 0.5× 467 0.9× 153 5.2k
Chiara Azzari Italy 38 733 0.4× 2.7k 1.9× 589 0.7× 160 0.3× 387 0.7× 251 5.1k
Kenji Takeuchi Japan 40 833 0.4× 1.5k 1.0× 1.1k 1.3× 171 0.3× 1.8k 3.4× 247 6.3k
Robert S. Holzman United States 41 2.3k 1.1× 2.3k 1.6× 675 0.8× 724 1.2× 411 0.8× 156 6.3k
Claudio Maria Mastroianni Italy 41 2.8k 1.4× 1.7k 1.2× 989 1.1× 845 1.5× 919 1.7× 354 6.7k
Rob Roy MacGregor United States 46 1.9k 0.9× 2.4k 1.7× 1.9k 2.2× 1.0k 1.8× 1.0k 1.9× 128 6.9k

Countries citing papers authored by Jan Fehr

Since Specialization
Citations

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

Fields of papers citing papers by Jan Fehr

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Jan Fehr

This figure shows the co-authorship network connecting the top 25 collaborators of Jan Fehr. A scholar is included among the top collaborators of Jan Fehr 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 Jan Fehr. Jan Fehr is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Hampel, Benjamin, et al.. (2025). Problematic online dating app use and its association with mental and sexual health outcomes in a sample of Men-having-Sex-with-Men. Journal of Behavioral Addictions. 14(1). 178–190.
2.
3.
Mäser, Pascal, et al.. (2024). Chagas disease in Switzerland: current situation, challenges and opportunities. Swiss Medical Weekly. 154(12). 3719–3719.
4.
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Künzler‐Heule, Patrizia, Axel J. Schmidt, Katharina Fierz, et al.. (2023). Exploring group differences in the response to a sexual risk reduction intervention to prevent hepatitis C virus reinfection in HIV-infected MSM: a mixed-methods study. AIDS Care. 36(4). 442–451. 2 indexed citations
6.
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Ballouz, Tala, Dominik Menges, Hélène E. Aschmann, et al.. (2022). Individual-Level Evaluation of the Exposure Notification Cascade in the SwissCovid Digital Proximity Tracing App: Observational Study. JMIR Public Health and Surveillance. 8(5). e35653–e35653. 10 indexed citations
8.
Zens, Kyra D., et al.. (2022). Pneumococcal Vaccination Coverage and Uptake Among Adults in Switzerland: A Nationwide Cross-Sectional Study of Vaccination Records. Frontiers in Public Health. 9. 759602–759602. 10 indexed citations
9.
Haller, Sabine, et al.. (2022). Ready-To-Go Questionnaire - Development and validation of a novel medical pre-travel risk stratification tool. Travel Medicine and Infectious Disease. 47. 102304–102304.
10.
Zens, Kyra D., Sarah R. Haile, Axel J. Schmidt, et al.. (2022). Retrospective, matched case–control analysis of tickborne encephalitis vaccine effectiveness by booster interval, Switzerland 2006–2020. BMJ Open. 12(4). e061228–e061228. 13 indexed citations
11.
Menges, Dominik, Tala Ballouz, A Anagnostopoulos, et al.. (2021). Burden of post-COVID-19 syndrome and implications for healthcare service planning: A population-based cohort study. PLoS ONE. 16(7). e0254523–e0254523. 196 indexed citations breakdown →
12.
Ulytė, Agnė, Thomas Radtke, Irène A. Abela, et al.. (2021). Variation in SARS-CoV-2 seroprevalence across districts, schools and classes: baseline measurements from a cohort of primary and secondary school children in Switzerland. BMJ Open. 11(7). e047483–e047483. 18 indexed citations
13.
Ballouz, Tala, Dominik Menges, Hélène E. Aschmann, et al.. (2021). Adherence and Association of Digital Proximity Tracing App Notifications With Earlier Time to Quarantine: Results From the Zurich SARS-CoV-2 Cohort Study. International Journal of Public Health. 66. 16 indexed citations
14.
Perumal, Rubeshan, Kogieleum Naidoo, Anushka Naidoo, et al.. (2020). A systematic review and meta-analysis of first-line tuberculosis drug concentrations and treatment outcomes. The International Journal of Tuberculosis and Lung Disease. 24(1). 48–64. 21 indexed citations
15.
Aebi‐Popp, Karoline, Gilles Wandeler, Luisa Salazar‐Vizcaya, et al.. (2018). Rapid decline of anti‐hepatitis C virus (HCV) antibodies following early treatment of incident HCV infections in HIV‐infected men who have sex with men. HIV Medicine. 19(6). 420–425. 13 indexed citations
16.
Notter, Julia, Brigitte Frey Tirri, Frank Bally, et al.. (2017). Sexuell übertragene Infektionen mit Chlamydia trachomatis. Swiss Medical Forum ‒ Schweizerisches Medizin-Forum. 17(34). 3 indexed citations
17.
Fehr, Jan, et al.. (2017). Extraction Strings for Ureteric Stents: Is There an Increased Risk for Urinary Tract Infections?. Surgical Infections. 18(8). 936–940. 18 indexed citations
18.
Neftel, K, et al.. (1986). Amodiaquine induced agranulocytosis and liver damage.. BMJ. 292(6522). 721–723. 224 indexed citations
19.
20.
Frei, D., et al.. (1979). Akute Leuk�mie nach Nierentransplantation. Annals of Hematology. 40(5). 343–348. 3 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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