[Dengue: a re-emerging disease. A clinical and epidemiological study in 57 Spanish travelers]

J Gascón, V Giner, J Vidal, J M Jou, E Mas, M Corachán
Medicina Clínica 1998 November 7, 111 (15): 583-6
Dengue infection is nowadays considered a re-emergent disease. It has a worldwide tropical and subtropical distribution. The dengue virus in a member of the flavivirus family composed by 4 different serotypes. The virus is transmitted by mosquitos of the Aedes genus. With the increment of travels to the endemic areas, dengue is now observed frequently in our country. We analyzed 57 patients, 30 with imported dengue (ID) and 27 with dengue fever suffered during the trip (DDT). This series is compared with other published ones and a review of the subject is presented. Patients with ID followed a protocol as a febril syndrome returning from the tropics. Dengue was diagnosed through a compatible clinico-epidemiological history, the absence of other ferbil illness and positivity of specific serology. All patients had travelled to endemic areas (Central America 28 cases, Indian subcontinent 15, South-East Asia 10, South America 2, West Africa one, and Pacific one). The following were the most important clinical characteristics: fever and asthenia (100%), headache (98%), mialgia (84%), arthralgia (72%), morbilliform rash (61%) and retroocular pain (65%). For ID cases, the most helpful analitical results were: leucopenia (70%), reactive lymphocytes in peripheral blood smear (70%), thrombocytopenia (70%), and increased hepatic enzymes ALAT (53%), ASAT (63%) and LDH (100% in the 7 patients tested for this enzyme). Dengue must be included in differential diagnosis of fever in patients coming back to travels to tropical areas.

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