Data Sources Utilized for the Ranking
The 5th edition of the Research.com Best Immunology Scientists in United States Ranking was developed utilizing comprehensive bibliometric data primarily sourced from OpenAlex and CrossRef, alongside multiple other authoritative databases. These well-established platforms provide extensive coverage of scholarly publications and citation information, enabling a robust evaluation of scientific impact. The citation-based metrics underlying the ranking were derived from data collected on January 12, 2026. A scientist’s position in the ranking is determined by their discipline-specific D-index (Discipline H-index), which exclusively considers papers and citation metrics attributed to the specific discipline of Immunology. This approach ensures precise alignment of the ranking with expertise and scholarly contributions within the chosen field.
Scope of Research and Inclusion Criteria
The ranking comprehensively examined a total of 187,135 scientist profiles identified from diverse bibliometric data sources across all research disciplines, including 2,199 scientists specializing specifically in Immunology. To qualify for inclusion, a scientist was required to have a minimum D-index of 40, with a majority of their tier publications categorized within Immunology. Additionally, consideration was given to notable awards and achievements relevant to the field, ensuring recognition of scholarly distinction beyond citation metrics alone.
The threshold for the D-index is set in increments of 10, calibrated based on the estimated total number of scholars within each discipline. This methodology guarantees that approximately the top 1% of leading experts are incorporated into the ranking. Furthermore, to maintain rigor in discipline specificity, the D-index must not deviate by more than 30% from the researcher’s general H-index, providing assurance that the measured impact genuinely reflects their contributions within Immunology.
Additional Verification Practices
Recognizing that raw bibliometric data alone cannot serve as an absolute measure of scholarly output, the Research.com team conducted manual verification of all scientist profiles included in the ranking. This process involved cross-correlation of publication records across a broad spectrum of trustworthy and diverse sources, ensuring high data integrity and reliability. Although the number of papers published in prominent journals and reputable conference proceedings does not directly influence ranking placement, it constitutes a meaningful secondary indicator of a researcher’s contribution to the scientific domain.
The position in the ranking is ultimately established based on each individual’s D-index, calculated from data aggregated from OpenAlex and CrossRef — the most prominent and extensively validated bibliometric databases available to the international research community. We invite interested readers to review further methodological details and validation protocols on our methodology page, which transparently presents the framework and standards underpinning this ranking.
Research.com’s Mission and Vision
Research.com is committed to motivating researchers, corporations, and policymakers worldwide to understand the trajectories and influence of leading experts. By providing a transparent and meticulously crafted platform, we aim to facilitate greater awareness of top researchers across specific areas of study, countries, and even individual research institutions. Our goal is to empower the global scientific community with reliable, data-driven insights that foster collaboration, recognition, and informed decision-making across academia and industry alike.
