This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology (RNA Virus Pa-1,2 & Miscellaneous Viruses), Subject name: Microbiology
All are Flaviviruses except, 
Select and explain. 
A. HCV, B. Chikungunya, C. Yellow fever, D. Japanese B encephalitis virus
B: Chikungunya
Answer: B: Chikungunya 
Explanation: Chikungunya belongs to the genus alphavirus of the family Togaviridae. Two genera of medical impoance in Flaviruses- Flavivirus: ahropod borne viruses; Yellow fever, JEV, Dengue... Hepacivirus: Hepatitis C virus, non-ahropod borne Two genera of medical impoance in Togaviruses- Genus- Alphavirus: Chikungunya, Onyong-nyong, WEE, VEE, EEE. Genus- Rubivirus: Rubella.