LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE / SCIENCE PHOTO LIBRARY LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE / SCIENCE PHOTO LIBRARY
Yellow fever virus particles. Coloured transmission electron micrograph (TEM) of yellow fever virus particles (brown) growing in culture. Yellow fever belongs to the flavivirus group and contains RNA (ribonucleic acid) genetic material. It is endemic in tropical Africa and Central and South America, and is transmitted to humans by infected female Aedes aegypti mosquitoes when they bite. It causes yellowing of the skin (jaundice), as well as fever, headache and nausea. In serious cases there may be liver and kidney damage, or even death. Vaccination can provide immunity. Magnification: x80,000 at 5x7cm size.
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