Dengue fever virus
(Date taken unknown)
Dengue virus. Coloured transmission electron micrograph of dengue virus particles (red), in an enveloping membrane (orange outline). Dengue, or Breakbone Fever, is transmitted to humans by the mosquito, Aedes aegypti, & causes symptoms of aching joints & muscles, fever, sore throat & a rash. A severe form, called dengue haemorrhagic fever, may be fatal. The dengue virus is similar to the Yellow Fever virus: both belong to the flavivirus section of the Togavirus group. Members of this group of RNA-containing viruses are enveloped & possess cubic capsid symmetry. Magnification: x75,000 6x4.5cm size.