Discussion
An arbovirus is defined by
Answer: B
Correct answer: transmission by an arthropod vector
Arbovirus is short for arthropod-borne virus, and the term is ecological rather than taxonomic: it groups viruses transmitted by mosquitoes, ticks and sandflies regardless of family. Dengue, yellow fever, chikungunya and tick-borne encephalitis belong to three different families and are all arboviruses, because what they share is a life cycle requiring replication in the vector as well as the host.
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