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 (zĕn′ə-dī′əg-nō′sĭs, zē′nə-)
n. pl. xen·o·di·ag·no·ses (-sēz)
Diagnosis of an infectious disease at an early stage by exposing a presumably infected individual or tissue to a clean, laboratory-bred mosquito, tick, or other vector and then examining the vector for the presence of the infective microorganism.

xen′o·di·ag·nos′tic (-nŏs′tĭk) adj.


(Medicine) med a method of diagnosing an infectious disease by exposing a vector animal to infected material before examining the animal for the pathogen
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Transmission in 97 breast-fed children excluded at birth by direct blood examination-microhematocrit and xenodiagnosis and by serology (IFAT) at 6-24 mo.
Avila HA, Pereira JB, Thiemann O, de Paiva E, Degrave W, Morel CM and Simpson L: Detection of Trypanosoma cruzi in blood specimens of chronic chagasic patients by polymerase chain reaction amplification of kinetoplast minicircle DNA: comparison with serology and xenodiagnosis.
The identification of Trypanosoma species was performed by xenodiagnosis of positive mice with 12 reared III instar nymphs of R.
The present communication discusses the use of mosquitoes for propagation and assays of arboviruses and xenodiagnosis.
This study's approach of characterizing Borrelia infection of ticks engorged on birds is analogous to xenodiagnosis, which is commonly used in assessing reservoir competence in the laboratory (17).
Previous reports have focused on the high sensitivity of PCR test when compared to serologic findings, xenodiagnosis, or blood culture.
henselae in these ticks might represent a highly sensitive form of xenodiagnosis.
To confirm successful infection in each mouse, these hosts underwent xenodiagnosis with noninfected larval ticks at 2 weeks after the infected nymphal ticks had been permitted to feed.
the use of xenodiagnosis detailed in them was not mentioned.
Conclusions derived from xenodiagnosis performed on field-derived animals differ from those that are obtained by an experimental study.
Xenodiagnosis was used to determine whether host animals had become infected by spirochetes; larval ticks were permitted to feed on them and the resulting nymphs were examined for spirochetes by dark-field microscopy.