Hiroaki Okamoto

698 papers and 32.1k indexed citations
i
.

About

Hiroaki Okamoto is a scholar working on Hepatology, Epidemiology and Infectious Diseases. According to data from OpenAlex, Hiroaki Okamoto has authored 698 papers receiving a total of 32.1k indexed citations (citations by other indexed papers that have themselves been cited), including 431 papers in Hepatology, 261 papers in Epidemiology and 225 papers in Infectious Diseases. Recurrent topics in Hiroaki Okamoto’s work include Hepatitis C virus research (238 papers), Hepatitis Viruses Studies and Epidemiology (227 papers) and Hepatitis B Virus Studies (217 papers). Hiroaki Okamoto is often cited by papers focused on Hepatitis C virus research (238 papers), Hepatitis Viruses Studies and Epidemiology (227 papers) and Hepatitis B Virus Studies (217 papers). Hiroaki Okamoto collaborates with scholars based in Japan, United States and Indonesia. Hiroaki Okamoto's co-authors include Masaharu Takahashi, Tsutomu Nishizawa, Makoto Mayumi, Fumio Tsuda, Shunji Mishiro, Fumio Tsuda, Yuzo Miyakawa, Y. Miyakawa, Y. Akahane and Yoshiki Sugai and has published in prestigious journals such as New England Journal of Medicine, Proceedings of the National Academy of Sciences and The Lancet.

In The Last Decade

Co-authorship network of co-authors of Hiroaki Okamoto

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

Fields of papers citing papers by Hiroaki Okamoto

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Hiroaki Okamoto

Since Specialization
Citations

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

Explore authors with similar magnitude of impact

Rankless by CCL
2026