On July 9, health authorities in Wuhan’s Wuchang District confirmed a case of cholera at Wuhan University, following a report from a campus-affiliated hospital of an infectious diarrheal illness. The diagnosis was confirmed by the Wuchang Center for Disease Control and Prevention (CDC) late that evening.
The affected individual is a graduate student at Wuhan University, residing on the eighth floor of the School of Engineering building. The patient has a prior history of gastroenteritis and began experiencing symptoms—including fever, vomiting, and watery diarrhea—at approximately 5:00 a.m. on July 8. After three episodes of diarrhea within five hours, the student sought care at Wuhan University Hospital and was subsequently transferred to Zhongnan Hospital of Wuhan University for further evaluation and management. The patient is now isolated at Renmin Hospital of Wuhan University and remains clinically stable.
In response to the confirmed case, university and public health officials implemented immediate containment measures. On July 10, the School of Engineering building—including the student’s dormitory and associated laboratory facilities—was placed under temporary lockdown. Close contacts were rapidly identified and assessed: two roommates and one food service worker were confirmed as close contacts and relocated to a designated university isolation facility for monitoring and testing.
Laboratory analysis conducted by the Wuhan Municipal CDC revealed that the isolated *Vibrio cholerae* strain tested negative for key virulence genes—including those encoding cholera toxin—indicating low pathogenic potential. This finding aligns with the patient’s mild clinical course and rapid resolution of symptoms following standard supportive treatment.
As of 7:36 p.m. on July 10, targeted surveillance had been completed across 264 high-risk individuals and 259 environmental sampling sites—including dining halls, water sources, and shared restrooms. All samples tested negative for *Vibrio cholerae* serogroups O1 and O139, the only strains known to cause epidemic cholera. No secondary cases have been identified, and campus operations remain uninterrupted.