Brief Reports Dengue Hemorrhagic Fever in Calcutta
نویسندگان
چکیده
Calcutta has a long experience of recurrent epidemics of Dengue fever(l,2). Serological surveys carried out during 1960 by Sarkar et al.(3) and a re-survey in 1966(4) showed a high endemicity of Dengue in Calcutta. Calcutta experienced Dengue Hemorrhagic Fever (DHF) for the first time during 1963-65(5,6). During this epidemic, Dengue viruses 2 and 4 were isolated^). Dengue hemorrhagic fever is distinct from classical dengue fever (DF) and is characterized by an acute febrile illness followed by thrqmbocytopenia, hemorrhagic diathesis, dengue shock syndrome (DSS) and hemoconcentration. Another outbreak of DHF involving mostly children and young adults, due to Dengue virus type 3, was reported from different parts of Calcutta in 1983(2). The first epidemic of
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