Chikungunya virus (CHIKV), a rendered high definition atomic-level structure made from Pdb (protein data bank) X ray crystallography data that was taken by electron cryo-microscopy. The virus illustration colored by amino acid chains. Chikungunya virus causes chikungunya infection. Symptoms of chikungunya infection include the fever and joint pain, and often headache, muscle pain, joint swelling, and a rash. Most people are better within a week; however, occasionally the joint pain may last for months. The risk of death is around 1 in 1,000.