Asgeir Johannessen
- Infectious Diseases top 5%
- Epidemiology top 10%
- Virology top 2%
- Hepatology top 5%
- Emergency Medicine top 5%
- Co-authors
- Svein Gunnar GundersenEzra NamanLeiv SandvikMecky MateeHailemichael DesalegnNega BerheBernard NgowiJohan N. Bruun
- Topics
- Hepatitis B Virus Studies (31 papers)Hepatitis C virus research (30 papers)Liver Disease Diagnosis and Treatment (22 papers)
In The Last Decade
Asgeir Johannessen
48 papers receiving 879 citations
Peers
Comparison fields: 5 of 78
- Infectious Diseases 455
- Epidemiology 418
- Virology 299
- Hepatology 246
- Emergency Medicine 148
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 of co-authors of Asgeir Johannessen
This figure shows the co-authorship network connecting the top 25 collaborators of Asgeir Johannessen. A scholar is included among the top collaborators of Asgeir Johannessen 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 Asgeir Johannessen. Asgeir Johannessen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 2 | |
| 2 | 0 | |
| 3 | 2 | |
| 4 | 4 | |
| 5 | 0 | |
| 6 | 19 | |
| 7 | 41 | |
| 8 | 4 | |
| 9 | 20 | |
| 10 | 8 | |
| 11 | 23 | |
| 12 | 11 | |
| 13 | 14 | |
| 14 | 9 | |
| 15 | 19 | |
| 16 | 20 | |
| 17 | 12 | |
| 18 | 71 | |
| 19 | 47 | |
| 20 | 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) and Liver Disease Diagnosis and Treatment (22 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.