KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Chikungunya virus, computer illustration. Chikungunya virus is composed of an RNA (ribonucleic acid) genome enclosed in a protein coat, or nucleocapsid (shown here), which is itself surrounded by a lipoprotein envelope. The virus, which is transmitted by mosquitoes, causes a rare form of viral fever. Symptoms include a high fever, rash and arthritic joint pain.
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