BACKGROUND: Transmission of canine leishmaniasis (CanL), a severe infection caused by L. infantum, usually occurs through the sand fly bite to the vertebrate host. A venereal route of transmission has also been suggested, but this issue is still controversial.<br /><br />FINDINGS: Here, we report a case of a dog affected by orchitis showing a clinical profile of L. infantum infection. By exploiting a real-time PCR assay, we detected a significantly higher DNA load of the parasite in the lymph node and testis than in blood and urine samples collected from the dog.<br /><br />CONCLUSIONS: Our results suggest that: 1) L. infantum infection can be associated with testicular lesions in naturally infected dogs; 2) genital involvement could result in shedding of the parasites in the semen, favoring venereal transmission of the disease.
Manna, L., Paciello, O., Morte, R. D., & Gravino, A. E. (2012). Detection of Leishmania parasites in the testis of a dog affected by orchitis: Case report. Parasites and Vectors, 5(1). https://doi.org/10.1186/1756-3305-5-216