Serological detection of Rickettsia spp in pet Dogs and Cats in Bangkok and Neighboring Provinces

Name: Chanon Fa-Ngoen.

LCSH: Kasetsart University -- Theses. M.S. (Animal Health Technology) 2023.

Classification :.LCCS: SF809.R52

LCSH: Kasetsart University. -- Department of Veterinary Technology -- Theses.

LCSH: Rickettsial diseases in animals

LCSH: Rickettsia

LCSH: Rickettsial diseases.

LCSH: Cats -- Diseases.

LCSH: Dogs -- Diseases.

Abstract: Three groups of rickettsiosis, an arthropod-borne zoonotic disease, include scrub typhus (STG), typhus (TG), and spotted fever groups (SFG). The closer relationships between pets and owners have potentially increased the risk of disease transmission. There are limited studies on the seroprevalence of rickettsiosis in pet animals in Thailand. This study investigated the serological prevalence of rickettsiosis in pet dogs and cats in Bangkok and neighboring provinces. All 554 serum samples, including 367 pet dogs and 187 cats, were the leftover serum from the routine laboratory testing at the Kasetsart Veterinary Teaching Hospital. The samples were randomly selected without particular signalment, clinical signs, or blood parameters. All serums were analyzed using the ELISA for specific IgG to the STG, TG, and SFG. The overall prevalence in pet dogs was 30.25% (111/367), including STG 21%, TG 4.3%, and SFG 1%. Co-infections consisted of STG and TG 2.72 %, STG and SFG 0.27%, and three-group infection 0.27%. The overall prevalence in cats was 62.56% (117/187), including STG 28%, TG 4.2%, and SFG 6.4%. Co-infections in cats consisted of STG and TG 4.28%, STG, and SFG 5.35%, TG and SFG 3.21%, and three-group infection 10.69%. From 64 districts in 6 provinces, there is no significant difference among districts, Bangkok, and other provinces surrounding Bangkok for the prevalence of dogs and cats. The mean hematocrit (HCT) significantly decreased in the serological-positive dogs (P<0.05). Serological-positive dogs and cats were detected in significantly greater numbers of anemia cases than non-anemia cases (P<0.05). The number of serological-positive cats is significantly higher in decreased hemoglobin (HGB) (P<0.05). The seropositive samples significantly differed in older cats (P<0.05). These high exposures in pet dogs and cats could constitute important rickettsioses reservoirs. Significantly decreased HCT and HGB indicated anemia in the exposed dogs and cats. Therefore, the pathogenesis of rickettsioses in dogs and cats should be further focused. The study findings will raise awareness of this neglected disease among pet owners and veterinary hospital personnel and aid in future public health preventative planning.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Sarawan Kaewmongkol

Role: Thesis Advisor

Name: Gunn Kaewmongkol

Role: Thesis Co-Advisor

Created: 2023

Modified: 2025-06-24

Issued: 2025-06-24

วิทยานิพนธ์/Thesis

วิทยานิพนธ์/Thesis

application/pdf

URL: https://kasetsart.idm.oclc.org/login?url=http://www.lib.ku.ac.th/KUthesis/2566/chanon-fa-ng-all.pdf

CallNumber: SF809.R52.C43

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Animal Health Technology

Grantor: Kasetsart University

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