Dengue is a disease caused by an arbovirus, which has four related virus serotypes. It is the most important arthropod transmitted human viral disease, and constitutes an important worldwide health problem including Bangladesh. Dengue is a systemic and dynamic infectious disease. The infection may be asymptomatic or present itself with a broad clinical spectrum that includes both severe and non-severe clinical manifestations. After the incubation period (4 to 10 days), the illness begins abruptly and is followed by three phases—febrile, critical, and recovery. For a disease as complex in its manifestations, treatment is relatively simple, inexpensive, and very effective in saving lives as long as the intervention is done in a correct and timely manner. Reducing dengue mortality requires an organized process that guarantees early detection of the cases, its classification, treatment, and referral when necessary. The key component of this process is the delivery of optimal clinical services at all levels of health care, from primary to tertiary. Most dengue patients recover without requiring hospital admission while some may progress to severe disease. Principles of case classification (through severe criteria) and management decisions at the primary and secondary care levels, where patients are first seen and evaluated, can help
to identify patients at risk of developing severe dengue and the requirement of hospital care .These decisions should be complemented with prompt and appropriate treatment of severe dengue in referral centers.
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