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Dengue virus (DENV) is the cause of dengue fever. It is a mosquito -borne, single positive-stranded RNA virus of the family Flaviviridae ; genus Flavivirus . [ 1 ] [ 2 ] Four serotypes of the virus have been found, and a reported fifth has yet to be confirmed, [ 3 ] [ 4 ] [ 5 ] all of which can cause the full spectrum of disease. [ 1 ]
Dengue fever is a mosquito-borne disease caused by dengue virus, prevalent in tropical and subtropical areas. It is frequently asymptomatic ; if symptoms appear, they typically begin 3 to 14 days after infection.
Karelian fever Ockelbo disease Sindbis fever: Mosquito: Sindbis virus: Skin rash, fever, in severe cases - arthritis: Scandinavia, France, Russia: unknown Rickettsial diseases: Typhus rickettsialpox Boutonneuse fever African tick bite fever Rocky Mountain spotted fever etc. Tick, mite, lice: Rickettsia species (bacteria) Fever with bleeding ...
The word "chikungunya" is from the Makonde language and means "that which bends up", referring to the effect of debilitating joint pain on the patient. [41] Symptoms, generally appearing 5–7 days after exposure, can be confused with dengue and include fever, rash, headache, joint pain, and swelling. [42] The disease mainly occurs in Africa ...
Aedes aegypti (UK: / ˈ iː d iː z /; US: / eɪ d z / or / ˈ eɪ d iː z / from Greek αηδής 'hateful' and / eɪ ˈ dʒ ɪ p t i / from Latin, meaning 'of Egypt'), the yellow fever mosquito, is a mosquito that can spread dengue fever, chikungunya, Zika fever, Mayaro and yellow fever viruses, and other disease agents.
The Swahili word dinga may possibly have its origin in the Spanish word dengue, meaning fastidious or careful, which would describe the gait of a person suffering the bone pain of dengue fever. [43] However, it is possible that the use of the Spanish word derived from the similar-sounding Swahili. [40]
Dengue fever becomes more virulent during a second infection by means of antibody-dependent enhancement. After the first infection, macrophages display antibodies on their cell membranes specific to the dengue virus. By attaching to these antibodies, dengue viruses from a second infection are better able to infect the macrophages, thus reducing ...