Vidar Ormaasen

1.5k total citations
27 papers, 427 citations indexed

About

Vidar Ormaasen is a scholar working on Infectious Diseases, Virology and Epidemiology. According to data from OpenAlex, Vidar Ormaasen has authored 27 papers receiving a total of 427 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Infectious Diseases, 14 papers in Virology and 9 papers in Epidemiology. Recurrent topics in Vidar Ormaasen's work include HIV/AIDS drug development and treatment (16 papers), HIV Research and Treatment (14 papers) and HIV/AIDS Research and Interventions (12 papers). Vidar Ormaasen is often cited by papers focused on HIV/AIDS drug development and treatment (16 papers), HIV Research and Treatment (14 papers) and HIV/AIDS Research and Interventions (12 papers). Vidar Ormaasen collaborates with scholars based in Norway, Sweden and United Kingdom. Vidar Ormaasen's co-authors include Anne‐Marte Bakken Kran, Leo Flamholc, Anders Sönnerborg, Magnus Gisslén, Oona Dunlop, Johan N. Bruun, Else Quist‐Paulsen, Filip Josephson, Leiv Sandvik and Ylva Böttiger and has published in prestigious journals such as Scientific Reports, Radiology and The Journal of Infectious Diseases.

In The Last Decade

Vidar Ormaasen

26 papers receiving 420 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Vidar Ormaasen Norway	15	273	175	94	76	42	27	427
Eduardo Martínez Spain	11	194 0.7×	49 0.3×	136 1.4×	73 1.0×	17 0.4×	28	422
Catherine Knupp United States	7	320 1.2×	232 1.3×	170 1.8×	54 0.7×	11 0.3×	9	471
C. A. J. J. Jaspers Netherlands	13	168 0.6×	81 0.5×	176 1.9×	37 0.5×	9 0.2×	24	457
Amélie Menard France	11	261 1.0×	106 0.6×	85 0.9×	128 1.7×	5 0.1×	26	497
Yoninah Cramer United States	9	211 0.8×	98 0.6×	130 1.4×	32 0.4×	16 0.4×	17	345
Magda Opsomer Belgium	12	422 1.5×	293 1.7×	78 0.8×	123 1.6×	11 0.3×	29	517
Raffaella Libertone Italy	11	217 0.8×	56 0.3×	119 1.3×	49 0.6×	9 0.2×	29	332
Miwako Honda Japan	11	314 1.2×	113 0.6×	181 1.9×	145 1.9×	6 0.1×	20	456
K Blot Belgium	8	87 0.3×	62 0.4×	60 0.6×	109 1.4×	12 0.3×	15	283
Marilyn McMurchie Australia	6	297 1.1×	241 1.4×	84 0.9×	94 1.2×	4 0.1×	11	447

Countries citing papers authored by Vidar Ormaasen

Since Specialization

Citations

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

Fields of papers citing papers by Vidar Ormaasen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Vidar Ormaasen

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

Quist‐Paulsen, Else, et al.. (2019). To what extent can clinical characteristics be used to distinguish encephalitis from encephalopathy of other causes? Results from a prospective observational study. BMC Infectious Diseases. 19(1). 80–80. 14 indexed citations

Quist‐Paulsen, Else, Vidar Ormaasen, Anne‐Marte Bakken Kran, et al.. (2019). Encephalitis and aseptic meningitis: short-term and long-term outcome, quality of life and neuropsychological functioning. Scientific Reports. 9(1). 16158–16158. 13 indexed citations

Quist‐Paulsen, Else, Pål Aukrust, Anne‐Marte Bakken Kran, et al.. (2018). High neopterin and IP-10 levels in cerebrospinal fluid are associated with neurotoxic tryptophan metabolites in acute central nervous system infections. Journal of Neuroinflammation. 15(1). 327–327. 24 indexed citations

Llibre, Josep M., Alessandro Cozzi‐Lepri, Court Pedersen, et al.. (2014). Long term effectiveness of once‐daily unboosted atazanavir plus abacavir/lamivudine as a switch strategy in subjects with virological suppression. Journal of the International AIDS Society. 17(4S3). 19810–19810. 4 indexed citations

Mocroft, Amanda, Lene Ryom, Josip Begovać, et al.. (2013). Deteriorating renal function and clinical outcomes in HIV-positive persons. AIDS. 28(5). 727–737. 25 indexed citations

Andersson, Lars‐Magnus, Jan Vesterbacka, Anders Blaxhult, et al.. (2013). Lopinavir/ritonavir, atazanavir/ritonavir, and efavirenz in antiretroviral-naïve HIV-1-infected individuals over 144 weeks: An open-label randomized controlled trial. Scandinavian Journal of Infectious Diseases. 45(7). 543–551. 13 indexed citations

Quist‐Paulsen, Else, Anne‐Marte Bakken Kran, Oona Dunlop, John Wilson, & Vidar Ormaasen. (2012). Infectious encephalitis: A description of a Norwegian cohort. Scandinavian Journal of Infectious Diseases. 45(3). 179–185. 22 indexed citations

Rekić, Dinko, Daniel Röshammar, Martin Bergstrand, et al.. (2012). External Validation of the Bilirubin–Atazanavir Nomogram for Assessment of Atazanavir Plasma Exposure in HIV-1-Infected Patients. The AAPS Journal. 15(2). 308–315. 3 indexed citations

Rekić, Dinko, Daniel Röshammar, Leo Flamholc, et al.. (2011). Bilirubin—A Potential Marker of Drug Exposure in Atazanavir-Based Antiretroviral Therapy. The AAPS Journal. 13(4). 598–605. 11 indexed citations

10.

Johannessen, Asgeir, Ezra Naman, Svein Gunnar Gundersen, et al.. (2010). Drug resistance is widespread among children who receive long-term antiretroviral treatment at a rural Tanzanian hospital. Journal of Antimicrobial Chemotherapy. 65(9). 1996–2000. 20 indexed citations

11.

Edén, Arvid, Lars‐Magnus Andersson, Leo Flamholc, et al.. (2010). Differential Effects of Efavirenz, Lopinavir/r, and Atazanavir/r on the Initial Viral Decay Rate in Treatment Naïve HIV-1–Infected Patients. AIDS Research and Human Retroviruses. 26(5). 533–540. 14 indexed citations

12.

Grydeland, Håkon, Kristine B. Walhovd, Lars T. Westlye, et al.. (2010). Amnesia Following Herpes Simplex Encephalitis: Diffusion-Tensor Imaging Uncovers Reduced Integrity of Normal-appearing White Matter. Radiology. 257(3). 774–781. 7 indexed citations

13.

Josephson, Filip, Leo Flamholc, Magnus Gisslén, et al.. (2009). The relation between treatment outcome and efavirenz, atazanavir or lopinavir exposure in the NORTHIV trial of treatment-naïve HIV-1 infected patients. European Journal of Clinical Pharmacology. 66(4). 349–357. 16 indexed citations

14.

Josephson, Filip, Leif Bertilsson, Ylva Böttiger, et al.. (2008). CYP3A induction and inhibition by different antiretroviral regimens reflected by changes in plasma 4β-hydroxycholesterol levels. European Journal of Clinical Pharmacology. 64(8). 775–781. 54 indexed citations

15.

Kvale, Dag, Vidar Ormaasen, Anne‐Marte Bakken Kran, et al.. (2006). Immune modulatory effects of cyclooxygenase type 2 inhibitors in HIV patients on combination antiretroviral treatment. AIDS. 20(6). 813–820. 27 indexed citations

16.

Jensenius, Mogens, Dag Berild, Vidar Ormaasen, et al.. (2006). Fatal subarachnoidal haemorrhage in a Norwegian traveller with dengue virus infection. Scandinavian Journal of Infectious Diseases. 39(3). 272–274. 22 indexed citations

17.

Lugada, Eric, Jonathan Mermin, Frank Kaharuza, et al.. (2004). Immunoglobulin Levels Amongst Persons with and without Human Immunodeficiency Virus Type 1 Infection in Uganda and Norway. Scandinavian Journal of Immunology. 59(2). 203–208. 21 indexed citations

18.

Ormaasen, Vidar, Johan N. Bruun, Leiv Sandvik, Mona Holberg‐Petersen, & Per Ivar Gaarder. (2003). Prognostic Value of Changes in CD4 Count and HIV RNA During the First Six Months on Highly Active Antiretroviral Therapy in Chronic Human Immunodeficiency Virus Infection. Scandinavian Journal of Infectious Diseases. 35(6-7). 383–388. 8 indexed citations

19.

Mørch, Kristine, Siri Laura Feruglio, Vidar Ormaasen, & Johan N. Bruun. (2002). Alvorlig falciparummalaria behandlet med utskiftingstransfusjon. Tidsskrift for Den Norske Laegeforening. 1 indexed citations

20.

Ormaasen, Vidar, Johan N. Bruun, Leiv Sandvik, Mona Holberg‐Petersen, & Per Ivar Gaarder. (2002). A Search for Optimal Criteria in Initiating Antiretroviral Therapy in Chronic Human Immunodeficiency Virus Infection Focusing on CD4 Count and HIV RNA. Scandinavian Journal of Infectious Diseases. 34(12). 910–917. 2 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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