Ka-Tim Choy

1.8k total citations · 1 hit paper
14 papers, 1.1k citations indexed

About

Ka-Tim Choy is a scholar working on Epidemiology, Molecular Biology and Agronomy and Crop Science. According to data from OpenAlex, Ka-Tim Choy has authored 14 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Epidemiology, 3 papers in Molecular Biology and 3 papers in Agronomy and Crop Science. Recurrent topics in Ka-Tim Choy's work include Influenza Virus Research Studies (10 papers), Respiratory viral infections research (8 papers) and Plant Pathogenic Bacteria Studies (3 papers). Ka-Tim Choy is often cited by papers focused on Influenza Virus Research Studies (10 papers), Respiratory viral infections research (8 papers) and Plant Pathogenic Bacteria Studies (3 papers). Ka-Tim Choy collaborates with scholars based in Hong Kong, United States and China. Ka-Tim Choy's co-authors include Hui‐Ling Yen, Malik Peiris, Peter Pak‐Hang Cheung, Sin Fun Sia, Michael C. W. Chan, Dongdong Chen, Xuhui Huang, Prathanporn Kaewpreedee, Daniel K. W. Chu and Kenrie Pui Yan Hui and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Nature Communications and Applied and Environmental Microbiology.

In The Last Decade

Ka-Tim Choy

14 papers receiving 1.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Remdesivir, lopinavir, emetine, and homoharringtonine inhibit SARS-CoV-2 replication in vitro

2020 665 citations Ka-Tim Choy, Prathanporn Kaewpreedee et al. Antiviral Research profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ka-Tim Choy Hong Kong	11	606	320	198	143	119	14	1.1k
Qi Lv China	18	517 0.9×	314 1.0×	217 1.1×	46 0.3×	95 0.8×	42	1.0k
Weiqi Pan China	15	501 0.8×	340 1.1×	334 1.7×	73 0.5×	93 0.8×	41	1.3k
Everett Clinton Smith United States	19	1.7k 2.8×	364 1.1×	448 2.3×	146 1.0×	233 2.0×	26	2.3k
Andrés Pizzorno France	21	681 1.1×	1.0k 3.2×	403 2.0×	91 0.6×	85 0.7×	45	1.7k
Rana Abdelnabi Belgium	20	894 1.5×	216 0.7×	238 1.2×	64 0.4×	103 0.9×	50	1.3k
Ikuyo Takayama Japan	13	1.3k 2.1×	330 1.0×	299 1.5×	59 0.4×	133 1.1×	26	1.6k
Nathalie Wurtz France	17	493 0.8×	150 0.5×	197 1.0×	124 0.9×	84 0.7×	42	1.2k
Md. Golzar Hossain Bangladesh	15	574 0.9×	212 0.7×	177 0.9×	28 0.2×	69 0.6×	65	1.1k
Héctor R. Rangel Venezuela	19	609 1.0×	284 0.9×	327 1.7×	126 0.9×	29 0.2×	69	1.5k
Sehee Park South Korea	15	349 0.6×	297 0.9×	201 1.0×	24 0.2×	36 0.3×	39	897

Countries citing papers authored by Ka-Tim Choy

Since Specialization

Citations

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

Fields of papers citing papers by Ka-Tim Choy

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ka-Tim Choy. 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 Ka-Tim Choy. The network helps show where Ka-Tim Choy may publish in the future.

Co-authorship network of co-authors of Ka-Tim Choy

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

All Works

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14 of 14 papers shown

Su, Wen, et al.. (2024). High throughput profiling identified PA-L106R amino acid substitution in A(H1N1)pdm09 influenza virus that confers reduced susceptibility to baloxavir in vitro. Antiviral Research. 229. 105961–105961. 2 indexed citations

Su, Wen, Sin Fun Sia, Ka-Tim Choy, et al.. (2021). Limited onward transmission potential of reassortment genotypes from chickens co-infected with H9N2 and H7N9 avian influenza viruses. Emerging Microbes & Infections. 10(1). 2030–2041. 7 indexed citations

Xie, Chenyi, Wen Su, Sin Fun Sia, et al.. (2021). A(H1N1)pdm09 Influenza Viruses Replicating in Ferret Upper or Lower Respiratory Tract Differed in Onward Transmission Potential by Air. The Journal of Infectious Diseases. 225(1). 65–74. 13 indexed citations

Choy, Ka-Tim, Prathanporn Kaewpreedee, Sin Fun Sia, et al.. (2020). Remdesivir, lopinavir, emetine, and homoharringtonine inhibit SARS-CoV-2 replication in vitro. Antiviral Research. 178. 104786–104786. 665 indexed citations breakdown →

Zhou, Jie, Jianjian Wei, Ka-Tim Choy, et al.. (2018). Defining the sizes of airborne particles that mediate influenza transmission in ferrets. Proceedings of the National Academy of Sciences. 115(10). E2386–E2392. 63 indexed citations

Luk, Geraldine S. M., Connie Y. H. Leung, Sin Fun Sia, et al.. (2015). Transmission of H7N9 Influenza Viruses with a Polymorphism at PB2 Residue 627 in Chickens and Ferrets. Journal of Virology. 89(19). 9939–9951. 23 indexed citations

Cheung, Peter Pak‐Hang, et al.. (2014). Comparative mutational analyses of influenza A viruses. RNA. 21(1). 36–47. 12 indexed citations

Yen, Hui‐Ling, Jie Zhou, Ka-Tim Choy, et al.. (2014). The R292K Mutation That Confers Resistance to Neuraminidase Inhibitors Leads to Competitive Fitness Loss of A/Shanghai/1/2013 (H7N9) Influenza Virus in Ferrets. The Journal of Infectious Diseases. 210(12). 1900–1908. 21 indexed citations

Cheung, Peter Pak‐Hang, Simon J. Watson, Ka-Tim Choy, et al.. (2014). Generation and characterization of influenza A viruses with altered polymerase fidelity. Nature Communications. 5(1). 4794–4794. 84 indexed citations

10.

Yen, Hui‐Ling, Jennifer L. McKimm‐Breschkin, Ka-Tim Choy, et al.. (2013). Resistance to Neuraminidase Inhibitors Conferred by an R292K Mutation in a Human Influenza Virus H7N9 Isolate Can Be Masked by a Mixed R/K Viral Population. mBio. 4(4). 84 indexed citations

11.

Wong, Diana, Ka-Tim Choy, Renee W. Y. Chan, et al.. (2012). Comparable Fitness and Transmissibility between Oseltamivir-Resistant Pandemic 2009 and Seasonal H1N1 Influenza Viruses with the H275Y Neuraminidase Mutation. Journal of Virology. 86(19). 10558–10570. 32 indexed citations

12.

Yen, Ming‐Ren, Nien‐Tsung Lin, Chih‐Hsin Hung, et al.. (2002). oriC Region and Replication Termination Site, dif , of the Xanthomonas campestris pv. campestris 17 Chromosome. Applied and Environmental Microbiology. 68(6). 2924–2933. 22 indexed citations

13.

Tseng, Yi-Hsiung, Ka-Tim Choy, Chih‐Hsin Hung, et al.. (1999). Chromosome Map of Xanthomonas campestris pv. campestris 17 with Locations of Genes Involved in Xanthan Gum Synthesis and Yellow Pigmentation. Journal of Bacteriology. 181(1). 117–125. 36 indexed citations

14.

Choy, Ka-Tim, et al.. (1996). Increase of xanthan production by self-cloning of a 3.0-kb EcoRI-KpnI chromosomal fragment in Xanthomonas campestris. Biotechnology Letters. 18(11). 1301–1304. 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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