publications

Selected publications. * denotes co-first authorship.

For a full list, see Google Scholar.

2026

  1. Under Review
    A randomized experiment of artificial intelligence fact-checking extension to combat HPV vaccine misinformation in China
    Zhengdong Wu, Zhiyuan Hou, Yao Rao, Hui Zheng, Liubing Gong, Hui Peng, Kathy Leung, Joseph T. Wu, and Leesa Lin
    2026
    Under review at npj Digital Medicine
  2. Artificial Intelligence Agents in Mental Health: A Systematic Review and Meta Analysis
    Lexuan Zhu, Wenkong Wang, Zhiying Liang, Wenjia Tan, Bingyi Chen, Xinxin Lin, Zhengdong Wu, Huizi Yu, Xiang Li, Jiyuan Jiao, Sijia He, and 14 more authors
    medRxiv preprint, Apr 2026
  3. An evidence-guided reinforcement learning method to improve psychiatric reasoning in small language models
    Xinxin Lin, Guangxin Dai, Yi Zhong, Xiang Li, Xue Xiao, Jian Liu, Yixin Zhang, Lingming Hu, Zhengdong Wu, Yongbo Zheng, Runchuan Zhu, and 17 more authors
    arXiv preprint arXiv:2602.06449, Feb 2026
  4. AI Chatbot Use for Human Papillomavirus Vaccine Literacy in Japan: A Randomized Clinical Trial
    Kana Kobayashi, Zhengdong Wu, Hana Tomoi, Ken Masuda, Heidi J. Larson, Kathy Leung, Joseph T. Wu, and Leesa Lin
    JAMA Network Open, Sep 2026
  5. Global Sentiment Toward Health AI at the Dawn of the ChatGPT Era: Empirical Analysis of Twitter (X) Discourse
    Lily Minh Wass, Zhengdong Wu, José Vizoso, Joseph T. Wu, and Leesa Lin
    Journal of Medical Internet Research, May 2026
  6. Evaluating large language models on multilingual vaccine knowledge: a benchmark study
    Siyuan Chen, Lily Wass, Zhengdong Wu, Lucas Garay, José Vizoso, Kathy Leung, Joseph Wu, and Leesa Lin
    npj Vaccines, Jun 2026

2025

  1. A vaccine chatbot intervention for parents to improve HPV vaccination uptake among middle school girls: a cluster randomized trial
    Zhiyuan Hou*, Zhengdong Wu*, Zhiqiang Qu*, Liubing Gong, Hui Peng, Mark Jit, Heidi J. Larson, Joseph T. Wu, and Leesa Lin
    Nature Medicine, Jun 2025

2024

  1. Mapping global public perspectives on mRNA vaccines and therapeutics
    Jiaxiang Xu, Zhengdong Wu, Lily Wass, Heidi J. Larson, and Leesa Lin
    npj Vaccines, 2024

2023

  1. Effectiveness of chatbots on COVID vaccine confidence and acceptance in Thailand, Hong Kong, and Singapore
    Kristi Yoonsup Lee, Saudamini Vishwanath Dabak, Vivian Hanxiao Kong, Minah Park, Shirley L. L. Kwok, Madison Silzle, Chayapat Rachatan, Alex Cook, Aly Passanante, Ed Pertwee, Zhengdong Wu, and 6 more authors
    npj Digital Medicine, 2023

2021

  1. An explainable supervised machine learning predictor of acute kidney injury after adult deceased donor liver transplantation
    Yihan Zhang, Dong Yang, Zifeng Liu, Chaojin Chen, Mian Ge, Xiang Li, Tongsen Luo, Zhengdong Wu, Chenguang Shi, Bohan Wang, Xiaoshuai Huang, and 3 more authors
    Journal of Translational Medicine, 2021