John S. Tam

6.7k total citations
78 papers, 4.3k citations indexed

About

John S. Tam is a scholar working on Epidemiology, Infectious Diseases and Hepatology. According to data from OpenAlex, John S. Tam has authored 78 papers receiving a total of 4.3k indexed citations (citations by other indexed papers that have themselves been cited), including 51 papers in Epidemiology, 36 papers in Infectious Diseases and 32 papers in Hepatology. Recurrent topics in John S. Tam's work include Hepatitis C virus research (28 papers), Hepatitis B Virus Studies (27 papers) and Viral gastroenteritis research and epidemiology (23 papers). John S. Tam is often cited by papers focused on Hepatitis C virus research (28 papers), Hepatitis B Virus Studies (27 papers) and Viral gastroenteritis research and epidemiology (23 papers). John S. Tam collaborates with scholars based in Hong Kong, China and United States. John S. Tam's co-authors include Paul K.S. Chan, Kar Neng Lai, Joseph J.�Y. Sung, Nancy W.Y. Leung, Ruth Rappaport, Fernand Mac–Moune Lai, Philip J. Johnson, Winnie Yeo, Joyce Steinberg and Sheng Zhong and has published in prestigious journals such as New England Journal of Medicine, Annals of Internal Medicine and PLoS ONE.

In The Last Decade

John S. Tam

77 papers receiving 4.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
John S. Tam Hong Kong 36 2.7k 1.6k 1.5k 301 297 78 4.3k
João Renato Rebello Pinho Brazil 36 2.2k 0.8× 2.0k 1.3× 1.3k 0.8× 178 0.6× 156 0.5× 241 4.1k
James G. Donahue United States 35 2.7k 1.0× 691 0.4× 1.4k 0.9× 221 0.7× 308 1.0× 100 5.9k
Harald H. Kessler Austria 31 1.7k 0.6× 821 0.5× 1.5k 1.0× 378 1.3× 147 0.5× 157 3.5k
M. Elaine Eyster United States 34 2.1k 0.8× 1.7k 1.1× 1.5k 1.0× 249 0.8× 597 2.0× 124 5.1k
George J. Nemo United States 30 1.9k 0.7× 1.3k 0.8× 1.2k 0.8× 234 0.8× 389 1.3× 50 4.7k
Annemarie Berger Germany 35 1.8k 0.7× 995 0.6× 1.7k 1.1× 219 0.7× 205 0.7× 130 3.7k
Harrison Alter United States 42 5.2k 2.0× 5.5k 3.5× 809 0.5× 142 0.5× 279 0.9× 119 7.9k
Dominique Salmon‐Céron France 35 2.2k 0.8× 1.1k 0.7× 2.0k 1.3× 497 1.7× 430 1.4× 161 4.8k
Esteban Ribera Spain 40 2.3k 0.9× 484 0.3× 3.0k 1.9× 230 0.8× 357 1.2× 231 5.5k
Julie Sheldon United Kingdom 39 2.7k 1.0× 1.3k 0.8× 1.6k 1.1× 1.5k 5.0× 388 1.3× 110 4.9k

Countries citing papers authored by John S. Tam

Since Specialization
Citations

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

Fields of papers citing papers by John S. Tam

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John S. Tam. 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 John S. Tam. The network helps show where John S. Tam may publish in the future.

Co-authorship network of co-authors of John S. Tam

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

All Works

20 of 20 papers shown
1.
Zhou, Xiaoming, Paul K.S. Chan, John S. Tam, & Julian W. Tang. (2011). A Possible Geographic Origin of Endemic Hepatitis C Virus 6a in Hong Kong: Evidences for the Association with Vietnamese Immigration. PLoS ONE. 6(9). e24889–e24889. 12 indexed citations
2.
Tam, John S., María Rosario Capeding, Lucy Chai See Lum, et al.. (2007). Efficacy and Safety of a Live Attenuated, Cold-Adapted Influenza Vaccine, Trivalent Against Culture-Confirmed Influenza in Young Children in Asia. The Pediatric Infectious Disease Journal. 26(7). 619–628. 134 indexed citations
3.
Tang, Julian W., Ida Miu‐Ting Chu, Jo L.K. Cheung, et al.. (2006). Hepatitis C virus genotype distribution among intravenous drug user and the general population in Hong Kong. Journal of Medical Virology. 78(5). 574–581. 40 indexed citations
4.
Leung, Nancy, et al.. (2005). Viral Hepatitis C in Hong Kong. Intervirology. 49(1-2). 23–27. 32 indexed citations
5.
Lo, M. K. W., Kuo-Hsiung Lee, Natalie Nok-Man Chan, et al.. (2004). Effects of gender, Helicobacter pylori and hepatitis B virus serology status on cardiovascular and renal complications in Chinese type 2 diabetic patients with overt nephropathy. Diabetes Obesity and Metabolism. 6(3). 223–230. 14 indexed citations
6.
Sung, Joseph J.�Y., et al.. (2002). Relationship of clinical and virological factors with hepatitis activity in hepatitis B e antigen‐negative chronic hepatitis B virus‐infected patients. Journal of Viral Hepatitis. 9(3). 229–234. 41 indexed citations
7.
Tam, John S.. (2002). Influenza A (H5N1) in Hong Kong: an overview. Vaccine. 20. S77–S81. 73 indexed citations
8.
Chan, Henry Lik‐Yuen, Nancy Leung, Chi‐Hang Tse, et al.. (2002). Occult HBV infection in cryptogenic liver cirrhosis in an area with high prevalence of HBV infection. The American Journal of Gastroenterology. 97(5). 1211–1215. 68 indexed citations
9.
Nelson, E. Anthony S., John S. Tam, Roger I. Glass, Umesh D. Parashar, & Tai Fai Fok. (2002). INCIDENCE OF ROTAVIRUS DIARRHEA AND INTUSSUSCEPTION IN HONG KONG USING STANDARDIZED HOSPITAL DISCHARGE DATA. The Pediatric Infectious Disease Journal. 21(7). 701–703. 54 indexed citations
10.
Chan, Henry Lik‐Yuen, Chi‐Hang Tse, May‐Ling Wong, et al.. (2002). Viral genotype and hepatitis B virus DNA levels are correlated with histological liver damage in HBeAg-negative chronic hepatitis B virus infection. The American Journal of Gastroenterology. 97(2). 406–412. 123 indexed citations
11.
Zhong, Sen, Jenny Chan, Winnie Yeo, John S. Tam, & P. J. Johnson. (1999). Hepatitis B envelope protein mutants in human hepatocellular carcinoma tissues. Journal of Viral Hepatitis. 6(3). 195–202. 36 indexed citations
12.
Lai, F M, et al.. (1994). Primary Glomerulonephritis with Detectable Glomerular Hepatitis B Virus Antigens. The American Journal of Surgical Pathology. 18(2). 175–186. 22 indexed citations
13.
14.
Ishiko, Hiroaki, Naokazu Takeda, Kikuko Miyamura, et al.. (1992). Phylogenetic analysis of a coxsackievirus A24 variant: The most recent worldwide pandemic was caused by progenies of a virus prevalent around 1981. Virology. 187(2). 748–759. 43 indexed citations
15.
Lai, Kar Neng, Philip Kam‐Tao Li, Siu Fai Lui, et al.. (1991). Membranous Nephropathy Related to Hepatitis B Virus in Adults. New England Journal of Medicine. 324(21). 1457–1463. 186 indexed citations
16.
Lai, Kar Neng, et al.. (1990). The Therapeutic Dilemma of the Usage of Corticosteroid in Patients with Membranous Nephropathy and Persistent Hepatitis B Virus Surface Antigenaemia. ˜The œNephron journals/Nephron journals. 54(1). 12–17. 53 indexed citations
17.
Lai, Fernand Mac–Moune, Kar Neng Lai, Edmund K. Li, Joseph J.�Y. Sung, & John S. Tam. (1989). Immunotactoid glomerulopathy with fingerprint immune deposits. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 415(2). 181–186. 13 indexed citations
18.
Tam, John S., et al.. (1989). RNA-electrophoresis as a typing method for nosocomial rotavirus infection in a special-care baby unit. Journal of Hospital Infection. 13(4). 367–375. 8 indexed citations
19.
Lai, Fernand Mac–Moune, John S. Tam, Philip Kam‐Tao Li, & Kar Neng Lai. (1989). Replication of hepatitis B virus with corticosteroid therapy in hepatitis B virus related membranous nephropathy. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 414(3). 279–284. 17 indexed citations
20.
Lai, Kar Neng, et al.. (1989). High prevalence of hepatitis B surface antigenaemia in nephrotic syndrome in Hong Kong. Annals of Tropical Paediatrics. 9(1). 45–48. 8 indexed citations

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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