Asgeir Johannessen

50 papers and 812 indexed citations i.

About

Asgeir Johannessen is a scholar working on Epidemiology, Hepatology and Infectious Diseases. According to data from OpenAlex, Asgeir Johannessen has authored 50 papers receiving a total of 812 indexed citations (citations by other indexed papers that have themselves been cited), including 34 papers in Epidemiology, 27 papers in Hepatology and 13 papers in Infectious Diseases. Recurrent topics in Asgeir Johannessen’s work include Hepatitis B Virus Studies (26 papers), Hepatitis C virus research (25 papers) and Liver Disease Diagnosis and Treatment (18 papers). Asgeir Johannessen is often cited by papers focused on Hepatitis B Virus Studies (26 papers), Hepatitis C virus research (25 papers) and Liver Disease Diagnosis and Treatment (18 papers). Asgeir Johannessen collaborates with scholars based in Norway, Ethiopia and Tanzania. Asgeir Johannessen's co-authors include Svein Gunnar Gundersen, Ezra Naman, Leiv Sandvik, Mecky Matee, Bernard Ngowi, Nega Berhe, Hailemichael Desalegn, Johan N. Bruun, Sokoine Kivuyo and Marius Trøseid and has published in prestigious journals such as PLoS ONE, Hepatology and Clinical Infectious Diseases.

In The Last Decade

Co-authorship network of co-authors of Asgeir Johannessen i

Fields of papers citing papers by Asgeir Johannessen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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.

Countries citing papers authored by Asgeir Johannessen

Since Specialization
Citations

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).

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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