24 September 2002
Dear Doctor,
I write to bring your attention to the recent local dengue fever (DF) outbreak in Ma Wan in which three construction site workers had disease onset in September 2002. Active surveillance is being conducted in Ma Wan to identify further cases. I would like to seek your kind support in the control of dengue fever in Hong Kong.
At present, the most effective strategy to control DF is to enhance disease surveillance and control the mosquito vectors. In this regard, medical practitioners are urged to report DF cases, whether suspected or confirmed, to the respective Regional Office of the Department of Health (DH). The telephone and fax number of the Regional Offices are listed below:
| Regional Office | Fax No. | Tel. No. |
|---|---|---|
| Hong Kong | 2572 7582 | 2961 8791 |
| Kowloon | 2375 8451 | 2199 9100 E149 |
| New Territories East | 2699 7691 | 2158 5107 |
| New Territories West | 2439 9622 | 2615 8571 |
During weekends, public holidays or after office hours, urgent notification can be made to the duty Medical Control Officer of the DH (Tel. No. : 7116 3300 call 9179).
Laboratory confirmation of dengue virus infection is available in the Government Virus Unit (GVU) of DH. Should laboratory confirmation for dengue infection for clinically indicated patients (especially those who have history of travel to dengue endemic areas or those who live or work in Ma Wan) be required, please collect 4 ml clotted blood from the patient during the acute phase of the illness and send the specimen to GVU, 9/F., Public Health Laboratory Centre, 382 Nam Cheong Street, Shek Kip Mei, Kowloon. A second blood specimen taken 7-10 days later may be required to confirm the diagnosis. You can also contact the GVU at telephone number 2319 8387 if you have any enquiries.
Since the outcome of patients suffering from dengue haemorrhagic fever/dengue shock syndrome (DHF/DSS) can be markedly improved with early diagnosis and treatment, all patients suspected to be suffering from DHF/DSS should be referred to hospitals for appropriate management.
Please also help educate your clients to eliminate mosquito breeding places in their domestic environment and vicinity.
Doctors should also be on the alert for travel-related illnesses, including DF when seeing patients coming back from endemic areas. Travellers intended to visit these areas should be advised to take precautionary measures to prevent mosquito bite. These include :
An
information sheet
on DF/DHF/DSS is enclosed for your reference.
|
Yours sincerely,
(Dr. Marina Sum) for Director of Health |