Abstract:
Objective To detect global infectious disease events occurring outside China in June 2025 and assess the importation risk to China and international travel risk.
Methods Utilizing open-source intelligence on the internet, this study conducts event-based surveillance of priority infectious diseases and adopts the risk matrix methodology to build an indicator system by integrating disease-, country- and event-specific indicators in terms of transmission likelihood and severity of consequences in order to assess the risk of the importation and the risk of international travel.
Results In June 2025, 11 concerned infectious diseases were detected to form events or outbreaks in 45 countries worldwide. In terms of importation risk to China, there are 7 high-risk events and 24 medium-risk events; in terms of international travel risk, there are 15 high-risk events and 32 medium-risk events.
Conclusion It is recommended to pay close attention to dengue fever in Asia and chikungunya fever in Europe, which may pose import risks. In terms of overseas travel risks, it is recommended that international travelers pay close attention to dengue fever in North America, South America and Asia, chikungunya fever in Africa. Compared to May 2025, general attention should be paid to dengue fever in the United States, Fiji, Mauritania, Peru, Yemen and Pakistan, mpox in Guinea, Kenya and Argentina, polio in Benin, Niger, Somalia, Angola and Yemen, cholera in the Democratic Republic of the Congo, Kenya, Mozambique, Yemen and India, Crimean-Congo hemorrhagic fever in Pakistan, yellow fever in Brazil, Zika virus disease in Argentina and South Korea, epidemic hemorrhagic fever in Indonesia, human avian flu in Cambodia regarding June 2025.
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