CHP investigates imported case of Shiga toxin-producing Escherichia coli infection
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The case involves a 14-year-old boy with good past health who developed diarrhoea and abdominal discomfort on November 16. He sought medical attention at a private doctor on November 18 and did not require hospitalisation. He has now recovered. His stool sample tested positive for STEC.
A preliminary investigation by the CHP revealed that the patient participated in a school trip to Bali, Indonesia, between November 10 and 15 (within the incubation period). According to available information, the remaining 33 students and teachers who participated in the school trip and the patient’s home contacts are asymptomatic so far. The CHP is following up on their health conditions and will continue to investigate the case.
Over the past five years (2020 to 2024), the CHP recorded one to six cases of STEC infection annually. Including the case announced above, three cases of STEC infection have been recorded so far this year. No significant upward trend or unusual cluster cases have been identified.
Generally, STEC infections are usually associated with the consumption of contaminated food or water, such as raw or undercooked meat products, contaminated fruits and vegetables, and unpasteurised dairy products. Direct person-to-person transmission through the faecal-oral route can also occur. Waterborne transmission has been reported, both from contaminated drinking water and from recreational waters. The public are advised to observe good personal and food hygiene.
Members of the public may refer to the CHP's webpage for more information about STEC.
Ends/Tuesday, December 2, 2025
Issued at HKT 17:40
Issued at HKT 17:40
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