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[Persistent Bartonella infection: epidemiological and clinical implications].

Henri-Jean Boulouis1, Nadia Haddad, Muriel Vayssier-Taussat

  • 1UMR BIPAR ENVA/AFSSA/INRA/UPVM Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Gal de Gaulle, 94704, Maisons-Alfort. hjboulouis@vet-alfort.fr

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Summary
This summary is machine-generated.

Bartonella bacteria infect many mammals, causing chronic infections in reservoirs like wild and domestic animals. These infections are increasingly recognized in species previously thought asymptomatic, impacting animal and human health.

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Area of Science:

  • * Microbiology and Infectious Diseases
  • * Veterinary Medicine
  • * Zoonotic Diseases

Background:

  • * Bartonella are Gram-negative hemotropic bacteria infecting diverse mammals.
  • * At least 14 species are pathogenic to humans and animals, with wild and domestic animals serving as significant reservoirs.
  • * Reservoir species typically exhibit chronic bacteremia, facilitating vector-borne transmission and persistent infections.

Purpose of the Study:

  • * To explore the epidemiology and molecular mechanisms of Bartonella infections in mammalian reservoirs.
  • * To highlight the clinical significance of persistent Bartonella infections in both reservoir and occasional hosts.
  • * To address the emerging recognition of clinical cases in previously asymptomatic reservoir species.

Main Methods:

  • * Review of existing literature on Bartonella epidemiology and pathogenesis.
  • * Analysis of reported clinical cases in various mammalian species.
  • * Discussion of molecular mechanisms underlying chronic bacteremia and persistence.

Main Results:

  • * Bartonella infections are widespread in mammals, with chronic bacteremia being a key epidemiological factor.
  • * Vector-borne transmission is a significant mode of spread for Bartonella.
  • * An increasing number of clinical manifestations are being observed in reservoir species, challenging previous assumptions of asymptomatic carriage.

Conclusions:

  • * Bartonella infections pose a significant public and animal health concern due to their widespread nature and potential for chronic, persistent infections.
  • * Understanding the molecular basis of Bartonella persistence is crucial for managing infections in reservoirs and preventing transmission.
  • * The rising incidence of clinical signs in reservoir species necessitates revised diagnostic and management strategies for Bartonella-associated diseases.