With the development of information technologies such as big data, cloud computing, and artificial intelligence, the application scenarios of citizen science worldwide are no longer limited to natural science research. A large number of application cases have emerged in the field of medical health, which suggests that the development of citizen science may bring new impetus to medical health. This study employs CiteSpace for a bibliometric analysis to evaluate the current status, objectives, and methodologies of citizen science in global healthcare. An analysis of 248 articles from the Web of Science Core Collection reveals that citizen science is predominantly implemented in high-income countries, including the United States, the United Kingdom, Germany, and the Netherlands, with significant applications in public health, chronic disease management, infectious disease surveillance, and digital health. The COVID-19 pandemic has further catalyzed the integration of citizen science into health surveillance and public health responses. Conversely, in low- and middle-income countries (LMICs), the development and implementation of citizen science remain nascent, primarily concentrated in traditional domains such as environmental science, ecology, and biodiversity conservation, with limited penetration into the healthcare sector. Several structural barriers, including inadequate technological infrastructure, insufficient policy support, limited public engagement, and constrained resource allocation, have impeded the broader adoption of citizen science in these regions. To mitigate these challenges, this study proposes targeted strategies, these interventions are anticipated to facilitate the expansion of citizen sciences role in global health governance, ultimately contributing to improved public health outcomes and social welfare.
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