Which option describes a NOT-flavivirus infection?

Which option describes a NOT-flavivirus infection?

• A. Dengue fever
• B. Yellow fever
• C. West Nile virus
• D. Hantavirus

Answer: (D)

Flaviviruses are enveloped, positive-sense RNA viruses in the Flaviviridae family, usually transmitted by arthropod vectors like mosquitoes, and include dengue, yellow fever, and West Nile virus. The infection described as not flavivirus is hantavirus, which is not in Flaviviridae; it belongs to the bunyaviruses and has a segmented negative-sense RNA genome. It is typically transmitted via rodent excreta rather than mosquitoes and causes diseases such as hemorrhagic fever with renal syndrome or hantavirus pulmonary syndrome. This combination of family classification, genome type, and transmission explains why hantavirus infection is not a flavivirus infection.

Flaviviruses are enveloped, positive-sense RNA viruses in the Flaviviridae family, usually transmitted by arthropod vectors like mosquitoes, and include dengue, yellow fever, and West Nile virus. The infection described as not flavivirus is hantavirus, which is not in Flaviviridae; it belongs to the bunyaviruses and has a segmented negative-sense RNA genome. It is typically transmitted via rodent excreta rather than mosquitoes and causes diseases such as hemorrhagic fever with renal syndrome or hantavirus pulmonary syndrome. This combination of family classification, genome type, and transmission explains why hantavirus infection is not a flavivirus infection.