Legionnaires' Disease Cases Prompt Caution: Proper Water System Maintenance Urged

Update on cases of Legionnaires' disease

The Centre for Health Protection (CHP) of the Department of Health today (August 5) reported the latest number of cases of Legionnaires' disease (LD), and stressed the importance of using and maintaining properly designed man-made water systems, adding that susceptible groups should strictly observe relevant precautions.

From July 28 to August 3, the CHP recorded one imported LD case and one community-acquired LD case:

Epidemiological investigations are ongoing to identify potential sources of infection, high-risk exposure and clusters, if any.

Furthermore, the CHP is investigating a case of LD in Gleneagles Hospital Hong Kong. The male patient, aged 82 with underlying illnesses, was admitted to Gleneagles Hospital Hong Kong on July 8 after receiving a surgery at Kwong Wah Hospital on June 27. He presented with lethargy and cough on July 26, and he developed a fever starting July 28. He was transferred to Kwong Wah Hospital for further management on July 30 due to persistent fever and deteriorated condition. His clinical diagnosis was pneumonia and he is currently in stable condition.

His sputum specimen tested positive for Legionella species upon laboratory testing. Initial enquiries revealed that the patient stayed at Gleneagles Hospital Hong Kong without any travel history during the incubation period.

"Epidemiological investigations with Gleneagles Hospital Hong Kong are ongoing to identify potential sources of infection, high-risk exposure and clusters, if any. Relevant water samples and environmental swabs were collected from potential sources for laboratory testing," a spokesman for the CHP said.

Tracing of contacts including staff and in-patients in the relevant ward is ongoing, and those identified will be put under medical surveillance. The CHP has provided health advice against LD to staff and in-patients, including those with weakened immunity who should use sterile or boiled water for drinking, tooth brushing and mouth rinsing. An investigation is ongoing.

As of August 3, 62 LD cases had been recorded this year. In 2023 and 2022, there were 121 and 80 cases respectively.

"Men, people aged over 50, smokers, alcoholics and persons with weakened immunity are more susceptible to LD. Some situations may also increase the risk of infection, including poor maintenance of water systems; living in areas with old water systems, cooling towers or fountains; using electric water heaters, whirlpools and spas or hot water spring spas; and recent stays in hotels or vessels," the spokesman said.

Legionellae are found in various environmental settings and grow well in warm water (20 to 45 degrees Celsius). They can be found in aqueous environments such as water tanks, hot and cold water systems, cooling towers, whirlpools and spas, water fountains and home apparatus that support breathing. People may become infected when they breathe in contaminated droplets (aerosols) and mist generated by artificial water systems, or when handling garden soil, compost and potting mixes.

Immunocompromised persons should:

The public should observe the health advice below:

​​​The public may visit the CHP'sLD page, theCode of Practice for Prevention of LDand theHousekeeping Guidelines for Cold and Hot Water Systems for Building Managementof the Prevention of LD Committee, and the CHP'srisk-based strategyfor prevention and control of LD.

Source: AI-generated images

HKSAR Government responds to media enquiries on reporting, photo and video-taking at prohibited places specified in subsidiary legislation made under Safeguarding National Security Ordinance

​In response to media enquiries on reporting, photo and video-taking at prohibited places specified in the subsidiary legislation made under the Safeguarding National Security Ordinance, a spokesman for the Government of the Hong Kong Special Administrative Region today (May 16) said the following:

The Secretary for Security, Mr Tang Ping-keung, at the meeting of the Legislative Council Subcommittee on Two Items of Subsidiary Legislation Made under the Safeguarding National Security Ordinance and the subsequent media session yesterday (May 15), clearly said that according to section 45 of the Safeguarding National Security Ordinance, a "specified officer" (including a police officer or a guard of the prohibited place), who has reasonable grounds to believe that exercising such power is necessary for safeguarding national security, may order any person not to do or cease to do such acts as that of approaching or inspecting (including doing so by electronic or remote means) a prohibited place, and such officer may also order persons in the neighbourhood of a prohibited place to leave. Any person who contravenes an order commits an offence.

There is no problem for members of the public to purely "check in" and take photos near a prohibited place while passing by, without any intention of endangering national security. However, if they deliberately take photos or videos of the entrances or the interior of a prohibited place so as to inspect such place, or engage in other conduct during photo or video-taking giving people reasonable grounds to believe that they may endanger national security, police officers or guards of the prohibited place have the power to ask the members of the public to leave in accordance with the above legal requirements and the judgment made at the scene at the time.