On November 9, Dr. Sophon Iamsirithavorn, Chief Inspector of Thailand’s Ministry of Public Health, reported a significant outbreak of foodborne illness affecting over 700 students from two schools in Rayong Province. The students developed symptoms, including stomach pain, vomiting, and diarrhea, shortly after a school sports event on November 6-7. Most cases were mild, with 93 students receiving hospital care and subsequently recovering. Laboratory tests on stool samples identified norovirus in one sample, leading authorities to suspect contaminated water or ice as a potential source, though the investigation is ongoing.

Health officials collected additional environmental samples, including water, melted ice, and food remnants from the event, with results expected by November 11. Norovirus, a common cause of acute gastroenteritis, spreads through contaminated food, water, and surfaces. To prevent further infection, authorities urge the public to consume only freshly cooked food and clean drinking water, and to maintain rigorous hygiene practices, such as handwashing with soap after using the bathroom. The Ministry also advises patients with mild symptoms to rest and rehydrate at home, while those with severe symptoms should seek immediate medical attention.