World's Best Scientists 2026 revealed!

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Medicine

D-Index
96
Citations
34040
World Ranking
9658
National Ranking
108

Overview

Wai K. Leung is affiliated with the University of Hong Kong in China and has contributed extensively to medical research, particularly in the field of gastroenterology. Their work spans multiple subfields including surgery, oncology, pulmonary and respiratory medicine, epidemiology, and infectious diseases.

Leung's research covers a range of topics central to gastroenterology and related areas. Main topics of their work include:

  • Gastric Cancer Management and Outcomes
  • Helicobacter pylori-related gastroenterology studies
  • Colorectal Cancer Screening and Detection
  • Microscopic Colitis
  • Inflammatory Bowel Disease
  • Gastroesophageal reflux and treatments
  • Eosinophilic Esophagitis

Their publications have appeared in several frequent venues such as:

  • Gastroenterology
  • Gastrointestinal Endoscopy
  • Helicobacter
  • Alimentary Pharmacology & Therapeutics
  • Gut

Among Leung's recent papers are:

  • "Gastrointestinal Manifestations of SARS-CoV-2 Infection and Virus Load in Fecal Samples From a Hong Kong Cohort: Systematic Review and Meta-analysis" (2020, Gastroenterology)
  • "Global prevalence of Helicobacter pylori infection between 1980 and 2022: a systematic review and meta-analysis" (2023, The Lancet. Gastroenterology & hepatology)
  • "Risk of autoimmune diseases following COVID-19 and the potential protective effect from vaccination: a population-based cohort study" (2023, EClinicalMedicine)
  • "Accuracy of artificial intelligence on histology prediction and detection of colorectal polyps: a systematic review and meta-analysis" (2020, Gastrointestinal Endoscopy)
  • "Aspirin Use and Risk of Colorectal Cancer Among Older Adults" (2021, JAMA Oncology)

Leung collaborates frequently with several researchers, including:

  • Ka Shing Cheung
  • Thomas Ka-Luen Lui
  • Chuan-Guo Guo
  • Wai-Kay Seto
  • Esther W. Chan

The main field of study for Leung is Medicine, with a significant focus on subfields that cross pathology, treatment, and epidemiological analysis of gastrointestinal diseases and cancers. Leung's body of research provides insights into the management of infections such as Helicobacter pylori and the complex interplay between gastrointestinal health and systemic diseases like COVID-19. Their work on cancer screening and the use of technologies such as artificial intelligence in diagnostics reflects an interdisciplinary approach to medical research.

Best Publications

  • Gastrointestinal Manifestations of SARS-CoV-2 Infection and Virus Load in Fecal Samples From a Hong Kong Cohort: Systematic Review and Meta-analysis.

    Ka Shing Cheung;Ivan F.N. Hung;Pierre P.Y. Chan;K. C. Lung

  • Screening for gastric cancer in Asia: current evidence and practice

    Wai K Leung;Ming-shiang Wu;Yasuo Kakugawa;Jae J Kim

  • Increasing incidence of colorectal cancer in Asia: implications for screening

    Joseph Jy Sung;James Yw Lau;KL Goh;WK Leung

  • Clopidogrel versus aspirin and esomeprazole to prevent recurrent ulcer bleeding.

    Francis K L Chan;Jessica Y L Ching;Lawrence C T Hung;Vincent W S Wong

  • Preventing Recurrent Upper Gastrointestinal Bleeding in Patients With Helicobacter Pylori Infection Who Are Taking Low-Dose Aspirin or Naproxen

    Francis K.L. Chan;S.C. Sydney Chung;Bing Yee Suen;Yuk Tong Lee

  • Enteric involvement of severe acute respiratory syndrome-associated coronavirus infection.

    Wai K Leung;Ka-fai To;Paul K.S Chan;Henry L.Y Chan

  • Celecoxib versus diclofenac and omeprazole in reducing the risk of recurrent ulcer bleeding in patients with arthritis.

    Francis K L Chan;Lawrence C T Hung;Bing Y Suen;Justin C Y Wu

  • Factors predicting progression of gastric intestinal metaplasia: results of a randomised trial on Helicobacter pylori eradication

    W K Leung;S-R Lin;J Y L Ching;K-F To

  • Enteric involvement of severe acute respiratory syndrome-associated coronavirus infection1 1The authors thank Man-yee Yung, Sara Fung, Dr. Bonnie Kwan, and Dr. Thomas Li for their help in retrieving patient information.

    Wai K Leung;Ka-fai To;Paul K.S Chan;Henry L.Y Chan

  • Combination of a cyclo-oxygenase-2 inhibitor and a proton-pump inhibitor for prevention of recurrent ulcer bleeding in patients at very high risk: a double-blind, randomised trial

    Francis Ka Leung Chan;Vincent Wai Sun Wong;Bing Yee Suen;Justin Che Yuen Wu

  • Atrophy and intestinal metaplasia one year after cure of H. pylori infection: A prospective, randomized study

    Joseph J.Y. Sung;San–Rin Lin;Jessica Y.L. Ching;Li–Ya Zhou

  • Eradication of Helicobacter pylori and risk of peptic ulcers in patients starting long-term treatment with non-steroidal anti-inflammatory drugs: a randomised trial

    Francis K L Chan;K F To;Justin C Y Wu;M Y Yung

  • Long-term proton pump inhibitors and risk of gastric cancer development after treatment for Helicobacter pylori: A population-based study

    Ka Shing Cheung;Esther W Chan;Angel Y S Wong;Lijia Chen

  • Omeprazole before endoscopy in patients with gastrointestinal bleeding.

    James Y. Lau;Wai K. Leung

  • Microbiology of Odontogenic Bacteremia: beyond Endocarditis

    N. B. Parahitiyawa;L. J. Jin;W. K. Leung;W. C. Yam

  • Cyclooxygenase-2 Expression in Helicobacter pylori-Associated Premalignant and Malignant Gastric Lesions

    Joseph J.Y. Sung;Wai K. Leung;Minnie Y.Y. Go;Ka F. To

  • Detection of gene promoter hypermethylation in the tumor and serum of patients with gastric carcinoma.

    Tin-Lap Lee;Wai K Leung;Michael W Y Chan;Enders K W Ng

  • The Effect of Endoscopic Therapy in Patients Receiving Omeprazole for Bleeding Ulcers with Nonbleeding Visible Vessels or Adherent Clots: A Randomized Comparison

    Joseph J.Y. Sung;Francis K.L. Chan;James Y.W. Lau;Man-Yee Yung

  • Fecal Viral Load and Norovirus-associated Gastroenteritis

    Martin C.W. Chan;Joseph J.Y. Sung;Rebecca K.Y. Lam;Paul K.S. Chan

  • Prevention of Dabigatran-Related Gastrointestinal Bleeding With Gastroprotective Agents: A Population-Based Study

    Esther W. Chan;Wallis C.Y. Lau;Wai K. Leung;Michael T.C. Mok

Frequent Co-Authors

Joseph J.Y. Sung
Joseph J.Y. Sung Nanyang Technological University
Francis K.L. Chan
Francis K.L. Chan Chinese University of Hong Kong
Lijian Jin
Lijian Jin University of Hong Kong
Jun Yu
Jun Yu Chinese University of Hong Kong
Ian C. K. Wong
Ian C. K. Wong University of Hong Kong
James Y.W. Lau
James Y.W. Lau Chinese University of Hong Kong
Justin C.Y. Wu
Justin C.Y. Wu Chinese University of Hong Kong
Lakshman P. Samaranayake
Lakshman P. Samaranayake University of Hong Kong
Ka-Fai To
Ka-Fai To Chinese University of Hong Kong
Ivan Hung
Ivan Hung University of Hong Kong

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