HYBRID MEDICAL ANIMATION / SCIENCE PHOTO LIBRARY HYBRID MEDICAL ANIMATION / SCIENCE PHOTO LIBRARY
West Nile virus particles, artwork. This virus consists of an RNA (ribonucleic acid) core of genetic material, surrounded by a nucleocapsid, which is enclosed in an outer protein envelope. West Nile Virus is an arbovirus (arthropod-borne virus) and is transmitted to humans and other mammals from infected birds through the bite of a mosquito vector. Symptoms can range from a mild fever to spontaneous bleeding of the skin and circulatory failure, which are often fatal.
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