xenodiagnosis

Term: xenodiagnosis

Literally meaning: “diagnosis through a foreigner”

Origin: Anc Greek

ξένος/xenos(=foreign, strange)

+ δια-/dia-(through) > δυο/dio(two) 

+ γνώσις/gnosis(=(inquiry, knowing) > γιγνώσκω/gignosko(=come to know, to learn). To the Greeks a diagnosis meant specifically a "discrimination, a distinguishing between two possibilities more compatible with differential diagnosis. 

Coined/History

(?)

Definition

Xenodiagnosis   is the diagnosis of an infectious disease by exposing  an infected individual or tissue to a clean vector and then examining the vector for the presence of the infective microorganism.