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The WHO dengue classification and case definitions: time for a reassessment. [Clasificación del dengue y definición de casos de la OMS: tiempo de una nueva evaluación]
Lancet. 2006 Jul 8; 368(9530):170-173.Dengue is the most prevalent mosquito-borne viral disease in people. It is caused by four dengue virus serotypes (DEN-1, DEN-2, DEN-3, and DEN-4), of the genus Flavivirus, and transmitted by Aedes aegypti mosquitoes. Infection provides life-long immunity against the infecting viral serotype, but not against the other serotypes. Although most of the estimated 100 million dengue virus infections each year do not come to the attention of medical staff , of those that do, the most common clinical manifestation is non-specific febrile illness or classic dengue fever. About 250 000--500 000 patients developing more severe disease. The risk of severe disease is several times higher in sequential than in primary dengue virus infections. Despite the large numbers of people infected with the virus each year, the existing WHO dengue classification scheme and case definitions have some drawbacks. In addition, the widely used guidelines are not always reproducible in different countries--a quality that is crucial to effective surveillance and reporting as well as global disease comparisons. And, as dengue disease spreads to different parts of the globe, several investigators have reported difficulties in using the system, and some have had to create new categories or new case definitions to represent the observed patterns of disease more accurately. (excerpt)
New York, New York, PPWP, 1966. 6 p.Add to my documents.