Hematological and seasonal aspects of natural infection by Hepatozoon spp. in dogs in the Sertão of Paraíba
Keywords:
Hemoparasites, Infection, ParasitesAbstract
This study aimed to conduct a case-by-case survey of diagnosed cases of Hepatozoon during in the period from 2018 - 2019, emphasizing the hematological aspects of higher incidence related to the animals and the seasonality. The research was carried out at the Clinical Pathology Laboratory of the Veterinary Hospital of the Federal Institute of Paraíba, and at a private Veterinary Laboratory located in the city of Sousa/PB. Data were obtained through a retrospective evaluation of blood counts performed in 718 samples of dogs from urban areas and diagnosed for Hepatozoon spp. It was found that 35 (4.8%) dogs were positive, from the visualization of gamontes parasitizing neutrophils. Among these infected animals, 16 (45%) were female and 19 (55%) were males. Regarding the age, there was a predominance in young animals up to 3 years old, totalizing 25 (72%) animals. The natural infection by Hepatozoon spp. was higher in the driest season, from January to May. The hematological aspects were variable in the infected animals, where the most observed were: anemia 23 (65%), thrombocytopenia 14 (40%), leukocytosis by neutrophilia 11 (31%), and hyperproteinemia 11 (31%). It is concluded that the prevalence of infection by Hepatozoon spp. was 4.8% in dogs in the urban region of Sertão Paraíbano, highlighting the period of warmer months, with a greater occurrence in mixed breed dogs (SRD), with no predilection for sex and age. The hematological findings among the infected animals were variable, with a higher frequency of anemia, thrombocytopenia, leukocytosis, and hyperproteinemia.
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