Da. Ashford et al., COMPARISON OF THE POLYMERASE CHAIN-REACTION AND SEROLOGY FOR THE DETECTION OF CANINE VISCERAL LEISHMANIASIS, The American journal of tropical medicine and hygiene, 53(3), 1995, pp. 251-255
Citations number
33
Categorie Soggetti
Public, Environmental & Occupation Heath","Tropical Medicine
The polymerase chain reaction (PCR) and serology was evaluated for the
diagnosis of canine visceral leishmaniasis in Bahia, Brazil in a stud
y of 125 dogs. The PCR was 100% sensitive in 25 dogs that had Leishman
ia demonstrated by either culture or hamster inoculation. It was 100%
specific for 35 dogs from the northeastern United States, all were PCR
negative. However, 22 of 54 Brazilian dogs that were culture-hamster
inoculation-negative were positive by PCR. The nature of the PCR produ
ct was identified by hybridization with specific Leishmania probes. Wh
ereas the sensitivity of serology in relationship to infection, as det
ermined by hamster or culture assay was more than 80%, sensitivity of
serology was only 63% when compared with PCR. These results raise ques
tions about the use of serology to detect Leishmania infection in dogs
, and suggest that the PCR might serve as a better gold standard to de
fine Leishmania infection than culture or hamster inoculation.