CHP investigates imported case of Shiga toxin-producing Escherichia coli infection
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The case involves a 55-year-old female with good past health. She developed abdominal pain and watery diarrhoea since November 30. She sought medical attention at a private doctor twice on December 4 and 5 but did not require hospitalisation. Her stool sample tested positive for STEC.
A preliminary investigation by the CHP revealed that the patient visited Japan between November 22 and 29 (within the incubation period) and consumed high-risk food there. The patient's family member, who travelled with her, is asymptomatic so far. The CHP is following up on the health condition of her household contact 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, four 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 is 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 16, 2025
Issued at HKT 19:40
Issued at HKT 19:40
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