Gastroenteritis, commonly known as \"stomach flu,\" is an inflammation of the lining of the stomach and intestines. It is primarily caused by viruses (e.g., Norovirus, Rotavirus), but can also result from bacteria or parasites. This widespread illness affects people of all ages globally, particularly young children and those in areas with inadequate sanitation.
Transmission methods vary. Please consult CDC or WHO resources for specific information.
Contagious Period: Varies by disease
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A cluster of 53 acute gastroenteritis cases is under investigation at a training institute in Wong Chuk Hang, Hong Kong, with symptom onset beginning 05 Mar 2026 among boarding students who shared meals at the institute's food premises. All cases remain mild with no hospitalizations, though the causative pathogen is unknown pending laboratory confirmation of stool samples. Multi-agency response includes environmental investigation, cleaning and disinfection of food premises, and medical surveillance of the institute to prevent further transmission.
Source: BEACON - View Full Report
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Global disease surveillance and guidelines from the World Health Organization
View WHO Resources →Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-04-19
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