Frequency of in dogs from the municipality of Veracruz, Mexico.

Infectious canine cyclic thrombocytopenia or canine anaplasmosis is an infectious disease caused by . In Mexico, cases of human infection have been reported. The present cross-sectional study aimed to determine the frequency of infection in the municipality of Veracruz, Mexico, by nested polymerase chain reaction method. A total of 100 blood samples from dogs living in the municipality were collected and analyzed between March and June 2022. A descriptive analysis of blood samples for hemoparasites frequencies was performed with the free online software VassarStats. The evaluated variables were sex, street access, usage of ticks control methods, and living environment. The free online software WinEpi software was used to calculate odds ratio (OR) and confidence interval (CI: 95.00%). Out of 100 analyzed blood samples, 27 were confirmed positive for . The only risk factor found was the absence of tick prevention methods (OR = 9.81; 95.00% CI: 23.00 - 44.50). In conclusion, the frequency of was 27.00% and no risk factors were identified.