The Centre for Health Protection (CHP) said today (7th) that it had earlier recorded two imported cases of dengue fever from Thailand, involving a 16-year-old male patient and a 43-year-old male patient, who had participated in a study tour to Thailand last month, the former had been bitten by mosquitoes in the forest, and the latter had developed fever and other symptoms after returning to Hong Kong. The CFS stated that an investigation into the case concerned is ongoing and an epidemiological investigation has been initiated against other members of the study tour group. Initial investigation revealed that three participants were symptomatic.


The Centre for Health Protection (CHP) of the Department of Health (DH) announced that it is investigating three imported cases of dengue fever from Thailand. (File photo/Photo by Lu Yiming)

According to the CHP, the first case involved a 16-year-old male patient who had been in good health and had been unwell since last Wednesday (November 11) with symptoms such as musculoskeletal pain and fever, followed by rash on his chest and back. He went to Canossa Hospital on the same day and was admitted to Queen Mary Hospital the next day. The patient is currently in stable condition and a blood sample was confirmed positive for dengue virus.

Preliminary investigation revealed that he had participated in a study tour to Thailand from November 11 to 19 and was staying at a local village resort. According to the information provided by the patient, he had hiked in the forest and had been bitten by mosquitoes.

The second case concerned a 43-year-old male patient, a companion of a 16-year-old male patient's study tour group, who was also in good health in the past and had developed symptoms such as fever, muscle pain and rash since last Sunday (11 November). He consulted with a private doctor last Tuesday (26 November), Sunday and Monday (11 and 28 December) respectively. The patient is currently in stable condition and a blood sample was confirmed positive for dengue virus.

According to the CFS, the latest surveillance data shows that the number of dengue fever cases in some Asian regions, including Bangladesh, Malaysia, Taiwan and Thailand, is higher than that of the same period last year. Members of the public are advised to stay vigilant and take effective measures to prevent and control mosquito infestation when travelling.

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