Feline bartonellosis and cat scratch disease

Area of Science:

• Veterinary Medicine
• Infectious Diseases
• Zoonotic Pathogens

Background:

• Bartonella species are significant emerging zoonotic pathogens with complex transmission cycles.
• Cats are susceptible to at least five Bartonella species, acting as reservoir hosts alongside other domestic and wild animals.
• Various arthropod vectors, including fleas, flies, and ticks, are implicated in Bartonella transmission to animals and humans.

Purpose of the Study:

• To review the complex transmission dynamics of Bartonella species.
• To highlight the role of cats as hosts for multiple Bartonella species.
• To discuss the clinical manifestations and diagnostic challenges of feline bartonellosis.

Main Methods:

• Literature review of Bartonella epidemiology, transmission, and pathogenesis.
• Analysis of diagnostic methods including serology, PCR, and culture.
• Evaluation of clinical signs and treatment responses in feline Bartonella infections.

Main Results:

• Bartonella species establish chronic intra-erythrocytic and endothelial infections in reservoir hosts.
• Experimentally infected cats exhibit relapsing bacteremia and potential for diverse clinical signs.
• Hematological abnormalities are infrequent but can include thrombocytopenia and eosinophilia in Bartonella henselae infections.
• Diagnosis is challenging due to sub-clinical infections, necessitating a combination of methods and response to treatment.

Conclusions:

• Feline bartonellosis diagnosis is complex, often requiring integrated diagnostic approaches.
• Effective flea control is paramount for reducing Bartonella henselae transmission in cats and preventing human exposure.
• Further research into Bartonella immunopathology is needed to fully understand disease mechanisms.