Stephen Valas

619 total citations
23 papers, 493 citations indexed

About

Stephen Valas is a scholar working on Epidemiology, Virology and Agronomy and Crop Science. According to data from OpenAlex, Stephen Valas has authored 23 papers receiving a total of 493 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Epidemiology, 11 papers in Virology and 7 papers in Agronomy and Crop Science. Recurrent topics in Stephen Valas's work include HIV Research and Treatment (11 papers), Herpesvirus Infections and Treatments (10 papers) and Cytomegalovirus and herpesvirus research (8 papers). Stephen Valas is often cited by papers focused on HIV Research and Treatment (11 papers), Herpesvirus Infections and Treatments (10 papers) and Cytomegalovirus and herpesvirus research (8 papers). Stephen Valas collaborates with scholars based in France, Poland and United States. Stephen Valas's co-authors include G. Perrin, R. Mamoun, Jacek Kuźmak, Monika Olech, Christophe Guionaud, Morgane Rolland, Horst Schirrmeier, Harald Granzow, Kristel Gache and Ilona Reimann and has published in prestigious journals such as PLoS ONE, Journal of Virology and Virology.

In The Last Decade

Stephen Valas

22 papers receiving 476 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Stephen Valas France 11 326 234 228 111 102 23 493
I. Leginagoikoa Spain 12 359 1.1× 339 1.4× 223 1.0× 156 1.4× 92 0.9× 14 575
Hugo Ramírez Álvarez Mexico 14 447 1.4× 312 1.3× 253 1.1× 204 1.8× 54 0.5× 50 653
Hafsa Madani Algeria 9 257 0.8× 123 0.5× 283 1.2× 67 0.6× 107 1.0× 12 448
Giantonella Puggioni Italy 12 171 0.5× 267 1.1× 104 0.5× 90 0.8× 269 2.6× 25 517
Leslie Jones United States 9 266 0.8× 79 0.3× 161 0.7× 129 1.2× 94 0.9× 13 414
Monika Olech Poland 12 231 0.7× 279 1.2× 143 0.6× 114 1.0× 81 0.8× 46 455
Martha Yami Ethiopia 11 137 0.4× 261 1.1× 121 0.5× 35 0.3× 73 0.7× 16 455
Annebel De Vleeschauwer Belgium 10 218 0.7× 157 0.7× 119 0.5× 27 0.2× 83 0.8× 16 364
Eric Hansson Australia 9 416 1.3× 105 0.4× 71 0.3× 55 0.5× 270 2.6× 9 523
Dhanavelu Muthuchelvan India 14 496 1.5× 273 1.2× 77 0.3× 115 1.0× 338 3.3× 66 733

Countries citing papers authored by Stephen Valas

Since Specialization
Citations

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

Fields of papers citing papers by Stephen Valas

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Stephen Valas

This figure shows the co-authorship network connecting the top 25 collaborators of Stephen Valas. A scholar is included among the top collaborators of Stephen Valas 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 Stephen Valas. Stephen Valas 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.
Comin, Arianna, Eduardo de Freitas Costa, Mark A. Arnold, et al.. (2025). Inter-laboratory evaluation of serological tests using Bayesian latent class models: A case study for bovine viral diarrhoea. Preventive Veterinary Medicine. 245. 106659–106659.
2.
Valas, Stephen, et al.. (2023). A retrospective evaluation of pooled serum ELISA testing in the frame of the French eradication program for infectious bovine rhinotracheitis. Preventive Veterinary Medicine. 214. 105890–105890. 3 indexed citations
3.
Heinemann, Marcos Bryan, Jenner Karlisson Pimenta dos Reis, Daniela S. Rajão, et al.. (2022). Genetic and antigenic characterization of Brazilian SRLV strains: Natural small ruminant interspecies transmission from mixed herds.. Infection Genetics and Evolution. 103. 105322–105322. 8 indexed citations
4.
5.
Olech, Monika, Stephen Valas, & Jacek Kuźmak. (2018). Epidemiological survey in single-species flocks from Poland reveals expanded genetic and antigenic diversity of small ruminant lentiviruses. PLoS ONE. 13(3). e0193892–e0193892. 41 indexed citations
6.
Wernike, Kerstin, Franz J. Conraths, Gina Zanella, et al.. (2014). Schmallenberg virus—Two years of experiences. Preventive Veterinary Medicine. 116(4). 423–434. 67 indexed citations
7.
Valas, Stephen, et al.. (2014). Serosurvey of Schmallenberg Virus Infection in the Highest Goat-Specialized Region of France. Transboundary and Emerging Diseases. 62(5). e85–e88. 5 indexed citations
8.
Russo, Pierre, et al.. (2012). Diverse host–virus interactions following caprine arthritis-encephalitis virus infection in sheep and goats. Journal of General Virology. 94(3). 634–642. 30 indexed citations
9.
Fiéni, F., J.L. Pellerin, Claude Roux, et al.. (2011). Can caprine arthritis encephalitis virus (CAEV) be transmitted by in vitro fertilization with experimentally infected sperm?. Theriogenology. 77(3). 644–651. 9 indexed citations
10.
Olech, Monika, et al.. (2011). Genetic and antigenic characterization of small ruminant lentiviruses circulating in Poland. Virus Research. 163(2). 528–536. 53 indexed citations
11.
Valas, Stephen, et al.. (2011). Interference of Vaccination against Bluetongue Virus Serotypes 1 and 8 with Serological Diagnosis of Small-Ruminant Lentivirus Infection. Clinical and Vaccine Immunology. 18(3). 513–517. 7 indexed citations
12.
Olech, Monika, et al.. (2009). Evidence for interspecies transmission of small ruminant lentiviruses in sheep and goats in Poland.. Bulletin of the Veterinary Institute in Pulawy. 53(2). 165–168. 9 indexed citations
13.
14.
Valas, Stephen, et al.. (2008). Field evaluation of a gag/env heteroduplex mobility assay for genetic subtyping of small-ruminant lentiviruses. Journal of General Virology. 89(8). 2020–2028. 10 indexed citations
15.
Valas, Stephen, et al.. (2006). Distribution and heterogeneity of small ruminant lentivirus envelope subtypes in naturally infected French sheep. Virus Research. 120(1-2). 156–162. 29 indexed citations
16.
Rolland, Morgane, et al.. (2004). Establishment and characterization of a goat synovial membrane cell line susceptible to small ruminant lentivirus infection. Journal of Virological Methods. 118(2). 123–130. 1 indexed citations
17.
Rolland, Morgane, et al.. (2002). Characterisation of an Irish caprine lentivirus strain—SRLV phylogeny revisited. Virus Research. 85(1). 29–39. 37 indexed citations
18.
Valas, Stephen, et al.. (1999). [Detection of caprine arthritis encephalitis virus in sperm of experimentally infected bucks].. PubMed. 29(6). 579–84. 17 indexed citations
19.
Valas, Stephen, et al.. (1999). Caprine arthritis-encephalitis virus in semen of naturally infected bucks. Small Ruminant Research. 32(2). 101–106. 23 indexed citations
20.
Valas, Stephen, et al.. (1997). North American and French Caprine Arthritis-Encephalitis Viruses Emerge from Ovine Maedi-Visna Viruses. Virology. 237(2). 307–318. 65 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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