OFCA and telecommunications industry join hands in launching new voice alert service to help public guard against suspicious calls
The Office of the Communications Authority (OFCA) today (December 30) announced that starting from tomorrow (December 31), local mobile service providers will send voice alerts to local mobile and fixed services users for calls made from newly activated local prepaid SIM cards to further assist the public in staying vigilant against suspicious calls.
"Under the new measure, when local mobile and fixed services users answer calls made from newly activated local pre-paid SIM cards, mobile service providers will first play a voice alert message stating, 'This call is made from a new pre-paid SIM card,' before the call is connected, to raise users' awareness of suspicious calls. The alert message service is provided by mobile service providers free of charge. Users are not required to register in advance, install any mobile apps, or make any settings to their mobile phones or fixed-line phones," a spokesman for OFCA said.
To safeguard the integrity of telecommunications services and the security of communications networks, OFCA has been working closely with telecommunications service providers and law enforcement agencies to devise and implement a series of measures to tackle the problem at its source. These include the full implementation of the Real-name Registration Programme for SIM Cards, the introduction and expansion of the SMS Sender Registration Scheme, the provision of voice or text alert service for incoming calls from outside Hong Kong with caller numbers prefixed with "+852", the blocking of suspected fraudulent phone numbers and websites based on the information provided by the Police, and requiring telecommunications service providers to continuously optimise their network management and promptly suspend the service of suspicious phone numbers, in order to comprehensively combat fraudulent calls and messages.
The spokesman reminded members of the public to always stay vigilant when using telecommunications services. They should not answer unknown calls casually, and should not disclose personal information or transfer money to unknown callers whose identities have not been verified to prevent potential losses.
OFCA will continue to collaborate with the telecommunications industry and law enforcement agencies in implementing various measures to combat phone and SMS scams, as well as to strengthen public education and publicity efforts to more comprehensively disseminate anti-deception messages to all members of the public. To enhance public understanding of the new voice alert service, OFCA has launched a new series of television and radio announcements in the public interest to promote the measure. The public may also visit OFCA's thematic website for more information on preventing phone scams.
DH continue to actively follow up on hospital-acquired case of Legionnaires' disease
Regarding a patient contracted Legionnaires' disease (LD) during hospitalisation at Hong Kong Sanatorium & Hospital (HKSH), the Centre for Health Protection (CHP) of the Department of Health (DH) today (August 4) announced that water samples taken from devices dispensing cooled boiled water within the hospital had tested positive for Legionella pneumophila (non-serogroup 1) at a concentration exceeding the action level for water supply systems in high-risk areas of hospitals. Sequence-based typing showed that the strain was the same as that found in the patient's respiratory specimen. The CHP considered that it is highly likely that the patient contracted LD by drinking water supplied by the affected water dispensing device. HKSH has completely discontinued the use of the water dispensing devices in question. A total of 137 patients who were hospitalised on the same floor as the patient has been put under medical surveillance. So far, none of them have contracted LD.
The water dispensing device in question was supplied by Aqua Vital Water Filtration Systems Ltd. The product is named the "BC-Tap Classic BA-Heat Exchange". According to the information provided by the supplier, this specific model was supplied exclusively to HKSH but not other hospitals. As a precaution, the DH today issued another letter reminding all private hospitals in Hong Kong to strictly adhere to the "Code of Practice for Prevention of LD" when providing drinking water to patients.
Upon receiving notification of the abovementioned nosocomial LD case last month, the CHP immediately sent personnel to the hospital to conduct an environmental investigation to identify the source of the infection. During the investigation, 10 water samples and six environmental samples were collected from the water tanks of the hospital building and the floor where the patient had been admitted. Test results from the CHP's Public Health Laboratory Services Branch (PHLSB) revealed that two water samples from the outlet of the device dispensing cooled boiled water in the pantry on that floor tested positive for Legionella pneumophila (non-serogroup 1) at levels ranging from 3 to 16.6 colony-forming units per millilitre (cfu/ml), far exceeding the action level for water supply systems in high-risk areas of hospitals (i.e. 0.1 cfu/ml or above). Sequence-based typing showed that the Legionella pneumophila (non-serogroup 1) isolated from the water samples and the patient's respiratory specimen belonged to the same sequence type. The remaining samples, including two water samples collected from the water tanks, six water samples collected from the single room where the patient had been admitted and six environmental samples, tested negative for Legionella pneumophila.
HKSH has since disinfected the relevant ward's water supply system according to the CHPs instructions. HKSH has also suspended the use of the water dispensing devices and is now providing bottled water for patients' consumption.
To assist in assessing the risk posed by the water dispensing device in question, the CHP collected 19 water samples and one environmental sample from the same model of water dispensing devices within the hospital for further testing. The PHLSB's testing results revealed that one environmental sample and four water samples tested positive for Legionella pneumophila at levels ranging from 0.3 to 12.9 cfu/ml. Testing is still underway for two additional water samples.
An in-depth investigation by the CHP and the Electrical and Mechanical Services Department found that the water dispensing device contains a built-in cooling system with a long, coiled metallic water conduit. When the device is not in use, stagnant warm water accumulates inside it. The temperature remains within a range conducive to the growth of Legionella bacteria for an extended period. This stagnant water, which may be contaminated with Legionella, is dispensed for direct consumption. Additionally, the metallic water conduit was not regularly disinfected or cleaned. HKSH has agreed to suspend use of the devices entirely and is currently providing patients with bottled water as a temporary measure.
The CHP will continue to investigate and follow up on the case. A meeting of the Prevention of Legionnaires' Disease Committee (PLDC) will be convened to report on the epidemiological investigation and the cause of the infection.
The PLDC was set up in 1985 to advise the Government from the public health, microbiology and engineering services perspectives on the minimisation of the risk of LD, and the promotion of good practices to building owners and associated practitioners to prevent the outbreak of LD.
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, whirlpool spas or hot water spring spas; and recent stays in hotels or ships.
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, whirlpool spas, water fountains, humidifiers and home respiratory devices 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.
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.
Additionally, as smokers and alcoholics are more susceptible to LD, the Government urges members of the public to quit smoking and avoid drinking. Members of the public may call the DH Integrated Smoking Cessation Hotline at 1833 183, which is answered by registered nurses who provide professional counselling and referral to a wide range of free smoking cessation services. The public may also visit the smoking cessation thematic website (www.livetobaccofree.hk) for more information on smoking cessation. The DH has also developed and promulgated the Alcohol Screening and Brief Intervention tool to primary healthcare service providers to facilitate the early identification and management of at-risk drinkers. For information on alcohol-related harm, please visi the DH's Change for Health website.
Source: AI-found images
