Johnny D. Callahan

1.2k total citations
17 papers, 952 citations indexed

About

Johnny D. Callahan is a scholar working on Infectious Diseases, Agronomy and Crop Science and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Johnny D. Callahan has authored 17 papers receiving a total of 952 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Infectious Diseases, 5 papers in Agronomy and Crop Science and 5 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Johnny D. Callahan's work include Animal Disease Management and Epidemiology (5 papers), Viral Infections and Immunology Research (4 papers) and Mosquito-borne diseases and control (4 papers). Johnny D. Callahan is often cited by papers focused on Animal Disease Management and Epidemiology (5 papers), Viral Infections and Immunology Research (4 papers) and Mosquito-borne diseases and control (4 papers). Johnny D. Callahan collaborates with scholars based in United States, Egypt and Peru. Johnny D. Callahan's co-authors include William M. Nelson, Carol A. Fisher, Joel C. Gaydos, Anthony W. Hawksworth, Gregory C. Gray, Gary W. Long, Ed Kramer, Daniel L. Rock, F. Brown and Fernando A. Osorio and has published in prestigious journals such as Journal of Clinical Microbiology, Emerging infectious diseases and American Journal of Tropical Medicine and Hygiene.

In The Last Decade

Johnny D. Callahan

17 papers receiving 911 citations

Peers

Johnny D. Callahan
Martyn Jeggo Australia
Fernando Fernández Sánchez Spain
Wudu T. Jemberu Ethiopia
Laura W. Pomeroy United States
R. A. Hawkes Australia
Babasola Oluseyi Olugasa Nigeria
Yahia Hassan Ali Sudan
Hossain M. S. Sazzad Bangladesh
Yi Tan United States
Aida Esteves Portugal
Martyn Jeggo Australia
Johnny D. Callahan
Citations per year, relative to Johnny D. Callahan Johnny D. Callahan (= 1×) peers Martyn Jeggo

Countries citing papers authored by Johnny D. Callahan

Since Specialization
Citations

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

Fields of papers citing papers by Johnny D. Callahan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Johnny D. Callahan. 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 Johnny D. Callahan. The network helps show where Johnny D. Callahan may publish in the future.

Co-authorship network of co-authors of Johnny D. Callahan

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

All Works

17 of 17 papers shown
1.
Toh, Teck‐Hock, et al.. (2021). Chikungunya and Zika Viruses Not Detected Among Patients With Dengue-Like Illness, Sarawak, Malaysia. Asia Pacific Journal of Public Health. 33(8). 995–996. 1 indexed citations
2.
Yang, Ming, et al.. (2020). Detection of Foot-and-Mouth Disease Virus in Swine Meat Juice. Pathogens. 9(6). 424–424. 7 indexed citations
3.
Zhang, Yingtao, Xiaoqin Guo, Johnny D. Callahan, et al.. (2018). Field evaluation of two commercial RT-rtPCR assays for porcine reproductive and respiratory syndrome virus detection using sera from ill and healthy pigs, China. Journal of Veterinary Diagnostic Investigation. 30(6). 848–854. 2 indexed citations
4.
King, Donald P., N.P. Ferris, Andrew E. Shaw, et al.. (2006). Detection of Foot-and-Mouth Disease Virus: Comparative Diagnostic Sensitivity of Two Independent Real-Time Reverse Transcription-Polymerase Chain Reaction Assays. Journal of Veterinary Diagnostic Investigation. 18(1). 93–97. 75 indexed citations
5.
Callahan, Johnny D., F. Brown, Fernando A. Osorio, et al.. (2002). Use of a portable real-time reverse transcriptasepolymerase chain reaction assay for rapid detection of foot-and-mouth disease virus. Journal of the American Veterinary Medical Association. 220(11). 1636–1642. 338 indexed citations
6.
Callahan, Johnny D., Shuenn-Jue Wu, Leonard F. Peruski, et al.. (2001). Development and Evaluation of Serotype- and Group-Specific Fluorogenic Reverse Transcriptase PCR (TaqMan) Assays for Dengue Virus. Journal of Clinical Microbiology. 39(11). 4119–4124. 170 indexed citations
7.
Gray, Gregory C., Johnny D. Callahan, Anthony W. Hawksworth, Carol A. Fisher, & Joel C. Gaydos. (1999). Respiratory Diseases among U.S. Military Personnel: Countering Emerging Threats. Emerging infectious diseases. 5(3). 379–387. 168 indexed citations
8.
Watts, Douglas M., et al.. (1997). Oropouche Virus Transmission in the Amazon River Basin of Peru. American Journal of Tropical Medicine and Hygiene. 56(2). 148–152. 40 indexed citations
9.
Phillips, Irving A., et al.. (1996). The Epidemiology of Dengue Virus Infection among Urban, Jungle, and Rural Populations in the Amazon Region of Peru. American Journal of Tropical Medicine and Hygiene. 55(4). 459–463. 82 indexed citations
10.
Callahan, Johnny D., et al.. (1993). Second generation hepatitis C virus assays: Performance when testing african sera. Journal of Medical Virology. 41(1). 35–38. 19 indexed citations
11.
12.
Constantine, Niel T., et al.. (1993). Multiple Blood-borne and Sexually Transmitted Infections in Sexually Transmitted Disease Clinic and Hospital Emergency Room Patient Populations. Sexually Transmitted Diseases. 20(4). 220–226. 4 indexed citations
13.
14.
Constantine, Niel T., Johnny D. Callahan, & Douglas M. Watts. (1992). Retroviral Testing: Essentials For Quality Control and Laboratory Diagnosis. Medical Entomology and Zoology. 26 indexed citations
15.
Constantine, Niel T., et al.. (1992). Concordance of Tests to Detect Antibodies to Hepatitis C Virus. Laboratory Medicine. 23(12). 807–810. 5 indexed citations
16.
Callahan, Johnny D., Niel T. Constantine, & Douglas M. Watts. (1990). More support for the use of HIV combination assays. Journal of Virological Methods. 28(2). 217–218. 1 indexed citations
17.
Constantine, Niel T., Johnny D. Callahan, & Douglas M. Watts. (1989). Time for HIV-1/HIV-2 combination tests?. Journal of Virological Methods. 26(2). 219–221. 6 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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