dinga
dengue
English from Swahili/Spanish
“The 'bone-breaking fever' may owe its name to a Swahili word for a seized-up spirit — or to Spanish fastidiousness about the disease's strange gait.”
Dengue's etymology is debated: it may come from Swahili dinga (cramp, seizure — describing the disease's painful symptoms) or from Spanish dengue (fastidiousness, prudery — describing the stiff, careful walk of sufferers).
The disease has been known in Asia for centuries, but the word entered English via Spanish-speaking Caribbean in the 18th century. The 1780 Philadelphia epidemic cemented the word in English.
The Swahili connection suggests the disease may have traveled from East Africa to the Americas via the slave trade, along with the Aedes aegypti mosquito. The word may have traveled the same route.
Whether Swahili or Spanish, the word captures the disease's most visible symptom: dengue sufferers walk stiffly, their joints aching so badly it's called 'breakbone fever.'
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Today
Dengue infects 400 million people annually — the most rapidly spreading mosquito-borne disease in the world. The word is now primarily a public health term.
Whether its origin is Swahili or Spanish, the word preserves the disease's defining agony: the stiffness, the cramps, the breakbone pain.
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