Canine Leptospirosis Cases and Molecular
Screening for Leptospira
interrogans Infection
M Chetta, D Vicari, S
Agnello, M Percipalle, V Ferrantelli and M Vitale*
Laboratory of Genetics of
Microorganisms, Istituto Zooprofilattico Sperimentale (IZS) of
Sicily “A. Mirri” Via Gino Marinuzzi 3, 90129 Palermo, Italy
Abstract
A molecular survey for
pathogenic Leptospira spp. in
kennelled dogs in Sicily, Italy, showed up to 16% of positive results. A fatal
leptospirosis case was confirmed in a stray dog in the city of Palermo in May
2012. The dog, a mixed breed male, was recovered for therapy but died within an
hour. Inflammation was present in the liver and kidneys. Haematoxylin-eosin
staining of the kidney tissue revealed interstitial nephrite indicative of
leptospirosis. The meninges were congested with some icteric shades. Several
organs and prepuce swabs showed positive reaction by PCR specific for pathogenic
Leptospira spp. The serum analysis by
MAT (microscopic agglutination test) showed positive results for
Leptospira serovar Canicola with a
titre of 1:400. Additionally, five clinical cases of canine leptospirosis were
suspected over a two years period (2011-2012) in the province of Palermo, in
contrast to the six in a previous 5
years period. An increasedconcern ofthe veterinarians onleptospirosis in pet dogs should be suggested.