Emerging chlamydial infections

Daniele Corsaro1, Danielle Venditti

  • 1Retrovirology Laboratory, Centre Hospitalier de Luxembourg, Luxembourg.

Insights

Novel chlamydiae, including Parachlamydia acanthamoebae and Simkania negevensis, are emerging pathogens in humans and animals. Free-living amoebae may act as reservoirs for these diverse intracellular bacteria.

Area of Science:

  • Microbiology
  • Bacteriology
  • Pathogen Discovery

Background:

  • Chlamydiae are significant intracellular bacterial pathogens affecting vertebrates.
  • Recent discoveries include novel chlamydiae with potential roles in human and animal diseases.

Purpose of the Study:

  • To review literature on chlamydial infections.
  • To emphasize newly described chlamydial organisms and their impact.

Main Methods:

  • Literature review of existing data on chlamydial infections.
  • Focus on molecular studies and experimental findings.

Main Results:

  • Novel chlamydiae like Parachlamydia acanthamoebae and Simkania negevensis are emerging respiratory pathogens.
  • Waddlia chondrophila is a potential cause of bovine abortion.
  • Chlamydiae infect diverse hosts including reptiles, fish, and arthropods.
  • Free-living amoebae serve as reservoirs and vectors for chlamydial multiplication.

Conclusions:

  • A vast diversity of chlamydiae exists, with many novel lineages identified.
  • Emerging chlamydial pathogens pose risks to human and animal health.
  • Understanding chlamydial reservoirs, like amoebae, is crucial for infection control.

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