Update on mosquito-borne diseases, dengue fever and chikungunya fever
The Centre for Health Protection (CHP) of the Department of Health today (July 18) reported the latest number of dengue fever (DF) cases and updated the latest situation of chikungunya fever (CF). The Controller of the CHP, Dr Edwin Tsui, reminded the public that due to the increase in temperature and rainfall in summer, mosquito infestation is expected to be aggravated in Hong Kong. In addition, members of the public travel more frequently during summer holidays to regions where mosquito-borne diseases are endemic. As a result, the risks of imported cases and local transmission of mosquito-borne diseases increase.
Dengue fever
From July 11 to yesterday (July 17), the CHP recorded one imported DF case. The patient had travelled to the Philippines during the incubation period.
As of yesterday, 30 imported DF cases have been recorded so far this year. A total of 161 cases of DF were recorded in 2024, including 156 imported and five local cases. In 2023, 62 imported cases of DF were recorded.
According to the World Health Organization (WHO), the global incidence of DF has markedly increased over the past two decades, posing a substantial public health challenge. In 2023, over 6.5 million cases and more than 7 300 dengue-related deaths were reported in over 80 countries/territories. In 2024, the WHO recorded over 14 million cases, which was a record number.
DF is prevalent in many neighbouring tourist destinations. Indonesia, Malaysia, Thailand and Vietnam have each recorded over 15 000 cases so far this year. Singapore also recorded over 2 800 cases. Meanwhile, according to the Guangdong Provincial Center for Disease Control and Prevention, Guangdong Province has recorded a total of 140 locally infected cases so far this year. A total of 51 cases were recorded in a week between July 7 and 13, with the highest number of cases recorded in Guangzhou, Zhongshan, Foshan and Chaozhou.
Detailed information on the latest DF situation in Hong Kong, as well as neighbouring and overseas countries and areas, has been uploaded to the CHPwebsite.
Chikungunya fever
There have been no CF cases in Hong Kong since 2020.
According to the WHO, CF cases have been recorded in more than 110 countries/regions. As of early June this year, over 220 000 cases had been reported in 14 countries/regions worldwide (including the Mainland, Taiwan and Singapore which are popular tourist destinations for Hong Kong citizens). Of these cases, about 80 were fatal. Furthermore, according to the Guangdong Provincial Center for Disease Control and Prevention, Guangdong Province has recorded a total of 481 locally infected cases in a week between July 8 and 14, and all cases were reported from Foshan (478 in Shunde and three in Chancheng).
"There are frequent imported cases of dengue fever in Hong Kong, as well as occasional sporadic local cases every year. The presence of Aedes albopictus in Hong Kong makes our population vulnerable. Regarding CF, though Aedes aegypti, the primary vector for spreading CF, is not found in Hong Kong, Aedes albopictus can also transmit CF. Imported cases of CF and DF can lead to local transmission if they are bitten by mosquitoes during the communicable period. Mosquitoes breed quickly during the hot, rainy spring and summer months. There are risks of mosquito-borne diseases outbreaks if mosquito control is inadequate. Hence, mosquito control is of paramount importance. Members of the public are advised to maintain strict environmental hygiene, mosquito control and personal protective measures both locally and when travelling outside Hong Kong. The public is reminded that eliminating mosquito breeding sites and avoiding mosquito bites are key to preventing mosquito-borne diseases. Those returning from areas affected by mosquito-borne diseases should apply insect repellent for 14 days upon arrival in Hong Kong. If feeling unwell, they should seek medical advice promptly and provide their travel details to a doctor," Dr Tsui added.
Members of the public are also reminded to take heed of the following advice on mosquito control:
Thoroughly check all gully traps, roof gutters, surface channels and drains to prevent blockage;
Scrub and clean drains and surface channels with an alkaline detergent compound at least once a week to remove any deposited mosquito eggs;
Properly dispose of refuse, such as soft drink cans, empty bottles and boxes, in covered litter containers;
Completely change the water of flowers and plants at least once a week. The use of saucers should be avoided if possible;
Level irregular ground surfaces before the rainy season;
Avoid staying in shrubby areas; and
Take personal protective measures such as wearing light-coloured long-sleeved clothes and trousers, and apply insect repellent containing DEET to clothing or uncovered areas of the body when doing outdoor activities.
DEET-containing insect repellents are effective and the public should take heed of the tips below:
Read the label instructions carefully first;
Apply right before entering an area with risk of mosquito bites;
Apply on exposed skin and clothing;
Use DEET of up to 30 per cent for pregnant women and up to 10 per cent for children*;
Apply sunscreen first, then insect repellent; and
Reapply only when needed and follow the instructions.
* For children who travel to countries or areas where mosquito-borne diseases are endemic or epidemic and where exposure is likely, those aged 2 months or above can use DEET-containing insect repellents with a DEET concentration of up to 30 per cent.
The public should call 1823 in case of mosquito problems and may visit the following pages for more information: the DF page of theCHPand theTravel Health Service, the chikungunya fever page of theCHPand theTravel Health Service, the latestTravel Health News,tips for using insect repellents, and the CHPFacebook PageandYouTube Channel.
Source: AI-found images
CFS to follow up certain batches of powdered infant and young children formula with possible presence of Cereulide produced by Bacillus cereus
The Centre for Food Safety (CFS) of the Food and Environmental Hygiene Department (FEHD) today (January 10) said that, it took initiative to meet with Nestlé Hong Kong again today, and confirmed the company's today announcement of an additional batch of powdered infant and young children formula suspected to have possibly used the raw material concerned. Nestlé Hong Kong has voluntarily stopped sales, removed from shelves the affected products and has initiated a precautionary recall. The CFS has collected samples of powdered infant and young children formula from the market for Bacillus cereus testing, the test results so far were satisfactory. The Environmental and Ecology Bureau is also closely monitoring the supply situation of other formula milk powder and maintaining communication with other major suppliers. It is noted that there is sufficient formula milk powder to meet the demand.
The spokesman said, the CFS has been actively following up on Nestlé company's voluntary and precautionary recalls of certain batches of its powdered infant and young children formula in certain areas in Europe due to possible presence of Cereulide produced by Bacillus cereus in the individual raw material. According to the latest information from Nestlé Hong Kong today, an additional batch of its powdered infant and young children formula imported into Hong Kong might have used the raw material concerned. The CFS had earlier enhanced surveillance in the market and collected a sample from the above batch for testing of Bacillus cereus. The test result of the sample was satisfactory. Nevertheless, as a precautionary measure, Nestlé Hong Kong has voluntarily stopped sales, removed from shelves the affected products and has initiated a precautionary recall.
Product details are as follows:
Product name (Net weight): NAN PRO 1 2 HMO (800g)
Batch number: 51670742F2
Best-before date: June 16, 2027
Place of Origin: Germany
"The CFS met Nestlé Hong Kong again today, urging them to properly handle the product recall issue and respond to public enquiries, in order to safeguard consumers' legitimate rights and interests. In addition, the CFS and Nestlé Hong Kong have jointly followed up, six suspected affected batches of infant and young children formula products that had not entered the market were marked and sealed. An additional 15 batches are currently en route to Hong Kong and will also be marked and sealed upon arrival. The CFS will continue to closely monitor the recall matters and remain fully committed to ensuring food safety, " the spokesman said.
Nestlé Hong Kong has initiated a recall of the affected batches of the products concerned. For enquiries about the recall, members of the public may contact the company through the following channels:
Consumer services hotline: 2599 8874 / 2797 6031/ 2179 8136 (Monday to Sunday, 9am to 9pm)
Email: consumerservices@hk.nestle.com
WhatsApp: 5283 4139 (NESTLÉ® NAN®) / 2599 8871 (Wyeth® Nutrition)
Online form: forms.office.com/e/BhqMhWfsUG?origin=lprLink
Consumers may choose to bring along the products (brand new or opened) for refund at place of purchase, or at exclusive service counters of Nestlé Nutrition Services from January 13 (Tuesday) onwards, to settle the recall and refund of the batches of the products concerned. Details of the exclusive service counters are as follows:
Kowloon Services Counter
Address: G/F, Park Hovan Commercial Building, 18 Hillwood Road, Tsim Sha Tsui, Kowloon (MTR Jordon Station Exit D)
Contact number: 3996 8196
Office hour: Monday to Saturday, 11am to 7.30pm; Sunday, 1pm to 5.30pm (except public holidays)
Hong Kong Services Counter
Address: 1/F, Ka Nin Wah Commercial Building, 423-425 Hennessy Road, Hong Kong (MTR Causeway Bay Station Exit B)
Contact number: 3996 8197
Office hour: Monday to Saturday, 11am to 7.30pm (except Sundays and public holidays)
The CFS, through its Food Incident Surveillance System, noted earlier that certain batches of Nestlé powdered infant formula were being voluntarily recalled in Europe due to possible contamination with Bacillus cereus. Upon learning of the incident, the CFS has immediately initiated follow up actions, published food incident posts to inform the public and the trade about the issue, and has been actively following up on the incident and enhanced surveillance.
Over the past three days (as of 4pm on January 9), the FEHD received a total of 18 food complaints and enquiries suspected to be related to the infant and young children formula products, including one anonymous complaint without contact information. The CFS and the Environmental Hygiene Branch have promptly followed up on all cases, including contacting the parties concerned to obtain details and collecting samples for testing. In addition, the CFS has referred the cases to the health department for follow-up. At present, no food poisoning cases related to the formula have been recorded.
Bacillus cereus is commonly found in the environment. Unhygienic conditions in food processing and storage may give rise to its growth. Cereulide is a heat-stable toxin produced in food by some strains of Bacillus cereus. Consuming food contaminated with excessive Bacillus cereus or its heat-stable toxins may cause gastrointestinal upset such as vomiting and diarrhoea.
The spokesman urged members of the public not to let infants and young children consume the affected batches of the products, and to seek medical treatment for infants or young children who felt unwell after taking the products concerned. The trade should also stop using or selling the affected batches of the products immediately.
"The CFS continues to closely monitor the developments of the situation, follow up and take appropriate action," the spokesman said.
Source: AI-found images
