Asgeir Johannessen
- Virology top 2%
- HIV Research and Treatment 11
- Hepatology top 5%
- Hepatitis C virus research 30
- Hepatitis Viruses Studies and Epidemiology 8
- Infectious Diseases top 5%
- HIV/AIDS Research and Interventions 12
- HIV/AIDS drug development and treatment 11
- Emergency Medicine top 5%
- Epidemiology top 10%
- Hepatitis B Virus Studies 31
- Liver Disease Diagnosis and Treatment 22
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- Alcohol Consumption and Health Effects 3
In The Last Decade
Asgeir Johannessen
48 papers receiving 879 citations
Peers
Comparison fields: 5 of 78
- Virology 299
- Hepatology 246
- Infectious Diseases 455
- Emergency Medicine 148
- Epidemiology 418
Countries citing papers authored by Asgeir Johannessen
This map shows the geographic impact of Asgeir Johannessen'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 Asgeir Johannessen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Asgeir Johannessen more than expected).
Fields of papers citing papers by Asgeir Johannessen
This network shows the impact of papers produced by Asgeir Johannessen. 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 Asgeir Johannessen. The network helps show where Asgeir Johannessen may publish in the future.
Co-authorship network
The 25 scholars most cited alongside Asgeir Johannessen, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
| # | Work | ||
|---|---|---|---|
| 1 | 2025 | 2 | |
| 2 | 2025 | 0 | |
| 3 | 2024 | 2 | |
| 4 | 2024 | 4 | |
| 5 | 2023 | 0 | |
| 6 | 2023 | 19 | |
| 7 | 2019 | 41 | |
| 8 | 2019 | 4 | |
| 9 | 2018 | 20 | |
| 10 | 2018 | 8 | |
| 11 | 2018 | 23 | |
| 12 | 2017 | 11 | |
| 13 | 2017 | 14 | |
| 14 | 2014 | 9 | |
| 15 | 2012 | 19 | |
| 16 | 2010 | 20 | |
| 17 | 2010 | 12 | |
| 18 | 2009 | 71 | |
| 19 | 2009 | 47 | |
| 20 | 2008 | 214 |
About Asgeir Johannessen
Asgeir Johannessen is a scholar working on Hepatology, Virology and Epidemiology, having authored 55 papers that have together received 902 indexed citations. Recurring topics across this work include Hepatitis B Virus Studies (31 papers), Hepatitis C virus research (30 papers), Liver Disease Diagnosis and Treatment (22 papers), HIV/AIDS Research and Interventions (12 papers), HIV Research and Treatment (11 papers), HIV/AIDS drug development and treatment (11 papers), Hepatitis Viruses Studies and Epidemiology (8 papers) and Alcohol Consumption and Health Effects (3 papers). The work is most often cited by research in Virology (299 citations), Hepatology (246 citations) and Infectious Diseases (455 citations). Asgeir Johannessen has collaborated with scholars based in Norway, Ethiopia and Tanzania. Frequent co-authors include Svein Gunnar Gundersen, Ezra Naman, Leiv Sandvik, Mecky Matee, Hailemichael Desalegn, Nega Berhe, Bernard Ngowi, Johan N. Bruun, Sokoine Kivuyo and Marius Trøseid. Their work appears in journals such as PLoS ONE, Hepatology and Clinical Infectious Diseases.
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.