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The causal organism of dengue fever is a mosquito-borne virus which be

June 1, 2025 by rawan239

The causal organism of dengue fever is a mosquito-borne virus which belongs to which one among the following categories?

Flavi-ribo virus

Adenovirus

Vaccinia virus

Nipah virus

This question was previously asked in

UPSC CDS-1 – 2024

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The correct option is A) Flavi-ribo virus.

Dengue fever is caused by the dengue virus (DENV). DENV is a member of the genus *Flavivirus* within the family *Flaviviridae*. Flaviviruses are positive-sense single-stranded RNA viruses. The term “ribo-virus” is a general term for RNA viruses. Thus, “Flavi-ribo virus” is a descriptive categorization referring to the Flavivirus genus and its RNA nature, making option A the most appropriate choice among the given options. Adenoviruses and Vaccinia viruses are DNA viruses, and Nipah virus belongs to a different RNA virus family (Paramyxoviridae).

Flaviviruses are typically arthropod-borne viruses (arboviruses), transmitted by mosquitoes or ticks. Other well-known human pathogens in the Flavivirus genus include Yellow Fever virus, West Nile virus, Zika virus, and Japanese Encephalitis virus.

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