DH following up on cluster of infections of disease of temporarily unknown cause in Democratic Republic of Congo
Following reports of a cluster of infections of a disease of temporarily unknown cause in the Democratic Republic of Congo (DRC), the Centre for Health Protection (CHP) of the Department of Health (DH) said today (December 5) that it had taken the initiative to seek further information from the World Health Organization (WHO), the Africa Centres for Disease Control and Prevention and the DRC health authorities.
According to the information announced by the DRC health authorities, since late October, 79 deaths due to a disease of still unknown cause have been recorded in a district in Kwango province, and more than 300 people have been infected. Most of the patients were aged above 15 and suffered from fever, headache, runny nose, cough, breathing difficulty and anaemia.
"Under the current mechanism, Hong Kong has been equipped with the ability to detect infections of unknown cause and emerging infectious diseases at boundary control points and hospitals. On the immigration level, the DH has been conducting temperature screening for arrivals at all boundary control points. Those who are found to have a fever will be assessed and transferred to public hospitals for medical examination as appropriate. Upon noticing that a disease of temporarily unknown cause in the DRC, the DH has immediately tried to collect the latest information from various channels to conduct risk assessment and formulate appropriate preventive and control measures," a spokesman for the CHP said.
There are currently no direct flights between the DRC and Hong Kong. The CHP has learned from the trade that travellers coming to Hong Kong from the DRC may generally choose transit hubs in Africa to Hong Kong, including Johannesburg in South Africa and Addis Ababa in Ethiopia. In light of the disease of temporarily unknown cause in the DRC, the CHP has, as a precautionary measure, immediately stepped up health screenings at the airport for passengers on all flights arriving in Hong Kong from the above-mentioned transit hubs. Port Health staff have been arranged to carry out temperature checks for travellers at the relevant flight gates, conduct medical assessments for symptomatic travellers and refer suspected cases of infections with public health significance to hospitals for medical examination.
"Members of the public who plan to go to the DRC should be vigilant and pay attention to personal and environmental hygiene at all times, and avoid visiting crowded places and having contact with sick persons. Upon returning to Hong Kong, one should seek medical treatment as soon as possible if they feel unwell and take the initiative to inform their doctors of their relevant travel history," he added.
Since October, the DH has not received any reports of people or travellers arriving in Hong Kong from the DRC suffering from unknown diseases.
"The DH will continue to closely monitor the situation in the DRC and WHO's related information, and take appropriate preventive and control measures based on risk assessment to protect public health," the spokesman said.
CHP announces one new melioidosis case
The Centre for Health Protection (CHP) of the Department of Health today (January 16) announced that one new melioidosis case was recorded in the past week (January 9 to 15). The CHP appealed to members of the public to maintain personal and environmental hygiene to prevent melioidosis. The CHP also specifically reminded high-risk groups, including the elderly and people with underlying diseases, to avoid contact with soil or muddy water after typhoons or storms with a view to lowering infection risk.
The case involves a 58-year-old male with underlying illnesses living in Kwai Tsing District. He presented with a fever and vomiting since January 10, followed by confusion on the next day (January 11). He was then sent to the Accident and Emergency Department of Yan Chai Hospital and is currently in the intensive care unit in critical condition. The clinical diagnosis was pneumonia. His clinical sample was confirmed to be positive for Burkholderia pseudomallei upon testing.
The CHP is investigating the infection source of the case. Initial epidemiological investigations revealed that the case is sporadic. No epidemiological linkages have been established between this case and other confirmed cases previously recorded in Hong Kong.
As of yesterday (January 15), one melioidosis case has been recorded in Hong Kong this year. In 2025, 21 melioidosis cases were recorded.
Person-to-person transmission and animal-to-human transmission are rare, but the bacteria causing melioidosis can survive in the local environment. Melioidosis is an endemic disease in Hong Kong, and melioidosis cases have been recorded in Hong Kong each year.
According to literature, melioidosis cases are more common after typhoons or rainstorms. The bacterium Burkholderia pseudomallei in soil and muddy water may become exposed to the ground after typhoons or rainstorms, and the bacteria could spread more easily with strong winds or rainstorms. As such, the number of melioidosis cases may increase.
With this in mind, where practicable, members of the public should stay indoors during typhoons and rainstorms, avoid travelling to areas with potential flooding, and not wade in or have contact with muddy water and soil. In addition, high-risk individuals should avoid paths near stormwater drains where aerosols may be generated from contaminated water.
Members of the public should also take the following preventive measures against infection:
Avoid contact with contaminated soil;
Wear appropriate protective clothing or footwear when participating in activities with possible contact with soil or water, e.g. using gloves and wearing boots. High-risk individuals may also consider wearing a surgical mask;
Wash or shower after exposure to contaminated water or soil;
Always clean any wounds as soon as possible and cover them with waterproof dressings;
Wash hands with liquid soap and water after handling soil or gardening;
Observe food hygiene and avoid drinking raw water; and
Travellers can contract the disease through outdoor water sports. Risk of infection can be minimised by avoiding exposure to water sources (such as rivers, ponds or lakes) that might be contaminated.
The CHP appealed to members of the public to seek medical advice if they develop symptoms, in particular people with diabetes or other immunocompromising conditions, in order to receive an appropriate medical diagnosis and treatment. For more information on melioidosis, please visit the website of the CHP atwww.chp.gov.hk/en/healthtopics/content/24/101110.html.
Source: AI-found images
