Travel Health Advice - Dengue Fever
What is it? A virus occurring in three clinical forms: Dengue fever causes a sudden onset of fever, headaches, skin rashes and severe muscle pains. A second wave of fever often occurs. Recovery normally occurs after a few days. Dengue haemorrhagic fever has a sudden onset of fever followed by other symptoms resulting from thrombocytopenia, increased vascular permeability and haemorrhagic manifestations. Finally, Dengue shock syndrome occurs in a small proportion of cases and severe hypotension develops. How is it transmitted? By mosquito bite during daylight hours. Where is it present? Tropical and subtropical regions of central and south America, south and south-east Asia, and Africa. Dengue fever is normally limited to altitudes below 600 metres (2,000 feet). Level of risk? High if travelling in regions where Dengue is endemic. What can I do to prevent getting it? Avoid mosquito bites during daylight hours. Treatment? Supportive treatment; most patients recover of their own accord.