Two hundred and one dog blood samples were collected from Veterinary clinics, kennels, and shelters in Northeastern Spain (2006-2008). Age, sex, municipality, living place, healthy status, contact with animals, and ectoparasite infestations were surveyed. IgG was measured by IFA. Titers ¡Ý 1/64 were considered positive. Cultures were carried out using samples of dogs with titers ¡Ý 1/128. The molecular detection was performed by real-time PCR.
Nine dogs (4.5 % ) were positive according to IFA (5: 1/64; 3: 1/128; 1: 1/512). There were no significant differences in the rates of antibodies related to any of the variables. Rickettsial DNA was detected in two cultures. Sequences obtained were identical to those of R. typhi.
The results show direct and indirect evidences of the presence of R. typhi infection in dogs.