Vivax

Part of speech: noun

Definitions

1. Characterizing a state of being lively and full of energy
2. Referring to an organism capable of living or thriving in various environments
3. Describing a quality of resilience or adaptability in adverse conditions

Etymology: Plasmodium vivax is the malaria parasite whose name means "lively" in Latin, and the name was chosen for a reason that is tied to its behaviour in the body. Its Latin adjective "vivax" means "long-lived" or "lively", from "vivere", "to live". The genus name "Plasmodium" was given by Ernst Marchiafava and Angelo Celli in 1890, but the species name "vivax" was applied by Grassi and Feletti in 1890 to describe the parasite's recurring infections. The reason is that P. vivax can lie dormant in the liver as hypnozoites, which can reactivate weeks or even years after the first infection, causing relapses long after the original bite. Clinicians noticed this pattern of recurring fevers, and the Latin adjective captured the parasite's persistence. Unlike some other malaria species, this one can survive quietly in the body, which is why treating it requires drugs that target the dormant liver stage as well as the blood stage.

Synonyms: Plasmodium vivax