Virus

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This digitally colorized transmission electron microscopic (TEM) image depicts numerous Chikungunya virus particles.

Chikungunya virus belongs to the family Togaviridae, genus Alphavirus. Alphavirus infections can either cause arthralgic or neuroinvasive disease. Other medically important alphaviruses found in the Americas include eastern equine encephalitis virus (neuroinvasive) and Mayaro virus (arthalgic). Chikungunya virus has a single-stranded, positive-sense RNA genome. The virus particles are enveloped icosahedral capsids and have a diameter of 60-70 nm.

Page last reviewed: January 13, 2022
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)