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Associations between presence of Bartonella species deoxyribonucleic acid and complete blood cell count and serum biochemical changes in client‐owned cats
Author(s) -
Williams Maggie,
Rao Sangeeta,
Braff Jennifer,
Buch Jesse S.,
Chandrashekar Ramaswamy,
Lappin Michael R.
Publication year - 2022
Publication title -
journal of veterinary internal medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.356
H-Index - 103
eISSN - 1939-1676
pISSN - 0891-6640
DOI - 10.1111/jvim.16376
Subject(s) - bartonella , medicine , neutrophilia , cats , bacteremia , bartonella henselae , ctenocephalides , cat scratch disease , complete blood count , odds ratio , leukopenia , immunology , felis , antibiotics , biology , virology , disease , microbiology and biotechnology , antibody , serology , chemotherapy
Background Infection with Bartonella species is common in cats but reported effects of bacteremia on laboratory variables differ. Objectives Evaluate for associations between Bartonella bacteremia and CBC and serum biochemical changes in sick and healthy cats throughout the United States. Animals A total of 3964 client‐owned cats. Methods Retrospective cohort study using submissions to a commercial laboratory between 2011 and 2017. Serum biochemistry and CBC abnormalities (categorized as above or below reference intervals), age, and location (high‐ or low‐risk state for Ctenocephalides felis ) in presumed healthy and sick cats were evaluated for associations with presence of Bartonella spp. DNA, detected by PCR. Univariate and multivariable logistic regression analyses were performed. Results Bartonella spp. DNA was amplified from 127 (3.2%) of 3964 cats; 126 (99.2%) of 127 were from high flea risk states and 121 (95.3%) of 127 were presumed sick. Fever of unknown origin was the most common PCR panel requested. In the multivariable analysis, neutrophilia, decreased ALP activity, clinical status (presumed sick), and young age (≤2 years) each were positively associated whereas neutropenia and hyperproteinemia both were negatively associated with Bartonella spp. bacteremia. Presence of Bartonella spp. DNA had no association with test results for other infectious disease agents. Conclusions and Clinical Importance In both healthy and sick cats, active Bartonella infections had minimal association with clinically relevant laboratory abnormalities. However, based on these results, in areas considered high risk for C. felis , active infection with Bartonella spp. is a reasonable differential diagnosis for cats presented with unexplained fever and neutrophilia, particularly if the cat is young.

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