CHP Reports Four New Legionnaires' Disease Cases, Urges Public to Maintain Water Systems and Follow Safety Precautions

DH announces latest situation of Legionnaires' disease cases

The Centre for Health Protection (CHP) of the Department of Health today (November 17) reported the latest number of Legionnaires' disease (LD) cases, and reminded the public of the importance of using and maintaining properly designed man-made water systems, adding that susceptible groups should strictly observe relevant precautions.

From November 9 to 15, the CHP recorded two imported and two community-acquired LD cases. All four patients had underlying illnesses.

Imported cases

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• The first case involves a 69-year-old male patient who joined a package tour to Beijing from October 27 to 31 (during the incubation period). Preliminary investigations revealed that the patient's itinerary overlapped with locations visited by two imported cases announced last week. Those two cases involving a family participated in a different package tour to Tianjin and Beijing from October 26 to 30. The CHP does not rule out an epidemiological link between the three cases. The CHP is conducting genomic analysis of Legionella bacteria from the patients' samples. The CHP's investigation is in progress. The CHP has proactively contacted individuals who joined the affected package tour groups to offer health assessment and medical surveillance. No other group members have been found to have contracted LD so far. The CHP has also notified the health authorities in the Chinese Mainland of the cases and informed the Travel Industry Authority.

• The second case involves a 72-year-old male patient who also travelled to the Mainland during the incubation period.

Community-acquired cases

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• A 70-year-old male patient living in Wong Tai Sin District; and

• A 69-year-old male patient living in Kowloon City District.

The CHP is conducting epidemiological investigations to identify potential sources of infection and high-risk exposure.

As of November 15, 144 LD cases had been recorded this year. In 2024 and 2023, there were 135 and 121 LD 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.

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:

• Use sterile or boiled water for drinking, tooth brushing and mouth rinsing;

• Avoid using humidifiers, or other mist- or aerosol-generating devices; and

• If using humidifiers, or other mist- or aerosol-generating devices, fill the water tank with only sterile or cooled freshly boiled water, and not water directly from the tap. Also, clean and maintain humidifiers/devices regularly according to manufacturers' instructions. Never leave stagnant water in a humidifier/device. Empty the water tank, wipe all surfaces dry, and change the water daily.

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​The public should observe the health advice below:

• Observe personal hygiene;

• Do not smoke and avoid alcohol consumption;

• Strainers in water taps and shower heads should be inspected, cleaned, descaled and disinfected regularly or at a frequency recommended by the manufacturer;

• If a fresh-water plumbing system is properly maintained, it is not necessary to install domestic water filters. Use of water filters is not encouraged as clogging occurs easily, which can promote growth of micro-organisms. In case water filters are used, the pore size should be 0.2 micrometres (µm) and the filter needs to be changed periodically according to the manufacturer's recommendations;

• Drain and clean water tanks of buildings at least quarterly;

• Drain or purge for at least one minute infrequently used water outlets (e.g. water taps, shower heads and hot water outlets) and stagnant points of the pipework weekly or before use;

• Seek and follow doctors' professional advice regarding the use and maintenance of home respiratory devices and use only sterile water (not distilled or tap water) to clean and fill the reservoir. Clean and maintain the device regularly according to the manufacturer's instructions. After cleaning/disinfection, rinse the device with sterile water, cooled freshly boiled water or water filtered with 0.2 µm filters. Never leave stagnant water in the device. Empty the water tank, keep all surfaces dry, and change the water daily; and

• When handling garden soil, compost and potting mixes:

• Wear gloves and a face mask;

• Water gardens and compost gently using low pressure;

• Open composted potting mixes slowly and make sure the opening is directed away from the face;

• Wet the soil to reduce dust when potting plants; and

• Avoid working in poorly ventilated places such as enclosed greenhouses.

The public may visit the CHP's LD page, the Code of Practice for Prevention of LD and the Housekeeping Guidelines for Cold and Hot Water Systems for Building Management of the Prevention of LD Committee, and the CHP's risk-based strategy for prevention and control of LD.

Source: AI-found images

Government announces updates on follow-up work on Tai Po fire

The three task forces set up by the Government for the fire at Wang Fuk Court in Tai Po - the Task Force on Investigation and Regulation, the Task Force on Emergency Support and Fund-Raising, and the Task Force on Emergency Accommodation Arrangements - are making full efforts to follow up on the support, relief, and investigation work related to the incident. Details are as follows:

Financial and welfare support

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For the Support Fund for Wang Fuk Court in Tai Po, established by the Government, donations received are about $3.4 billion as of noon today (December 13). With the start-up capital of $300 million from the Government, the fund's total has now reached around $3.7 billion. The fund will be used to assist residents in rebuilding their homes and providing long-term and sustained support.

Accommodation support

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As of this morning, a total of 1 392 residents have been accommodated, through the co-ordination of the Home and Youth Affairs Bureau, in youth hostels, camps, or hotel rooms. Another 3 163 residents are currently living in transitional housing units provided by the Housing Bureau or units from the Hong Kong Housing Society (HKHS).

In consideration of the extremely urgent situation of the residents affected by the fire incident, a special arrangement of a full rent exemption has been made earlier by the Housing Bureau to provide accommodation support to those affected residents moving into transitional housing or HKHS projects. In other words, if needed, the affected residents can stay for a longer period of time. The Government will continue to support the affected residents in terms of accommodation, and the residents in need do not have to worry about the relevant rental expenses or the duration of stay.

In addition, staff from the operating organisations of transitional housing and HKHS, as well as volunteers have been working around the clock to furnish the units with essential supplies. Taking Eminence Tower in Hung Shui Kiu as an example, each unit is equipped, upon move-in, with furniture and appliances such as bed frames, mattresses, pillows, cooking stoves and water heaters. Daily necessities including toilet paper, slippers and basic cleaning supplies, etc. are also provided. Such efforts are intended to help the affected residents settle in as quickly as possible.

At the same time, a number of organisations have proactively stationed their staff in some projects to provide residents in need with various forms of support, including free medical and legal consultation services. The Government has also set up service stations in 18 projects where more residents have moved in, providing consultation and support services for residents in need, standing together with them.

Relief supplies and donations

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The supplies donation online platform, established by the Government and the information technology sector, continues to operate, facilitating the registration of supplies donations from organisations and the public. The Government has so far received over 1 800 registrations, of which approximately 30 per cent were submitted by organisations, whereas the others were contributed by the public. The various registered donation items include food and beverages, clothing, daily necessities, bedding, and electrical appliances. The Government is actively assessing residents' actual needs through the relevant policy bureau, government departments, and service organisations for the matching of donated supplies in order to distribute appropriate items in phases to places in need. So far, about 19 600 donation items covering various categories have been distributed to different places. The matching and distribution of supplies will continue.

Regulation and inspection work

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The Housing Department today continued to remove the burnt scaffolding on the external walls of Wang Cheong House, Wang Tai House and Wang Sun House. As the environment at scene is narrow and the scaffolding and the protective nets of individual buildings may be subject to more serious damage, for the sake of safety, the Housing Department will conduct assessments with the Police on the timetable of removing the scaffolding of the remaining four affected buildings. In addition, the Independent Checking Unit of the Housing Bureau has also completed the extraction of concrete core samples from the seven affected buildings at Wang Fuk Court today.

The Development Bureau (DEVB) announced on December 11 a new mechanism for sampling and testing scaffold nets for external walls in Hong Kong. The Buildings Department is preparing for the issuance of a new practice note to registered contractors and will meet with the industry next week. The DEVB is moving ahead in full steam the supporting arrangements to ensure that there are sufficient designated laboratories and a suitable site for off-site sampling work.

Source: AI-found images