Does Air Filtration Work for Cat Allergen Exposure?

Curr Allergy Asthma Rep. 2020 May 14;20(6):18. doi: 10.1007/s11882-020-00912-w.


Purpose of review: The goal of this review is to compress all important information and results of the research in reducing cat allergen exposure using air filtration. Fel d 1 is the major allergen responsible for IgE responses in 90 to 95% of patients with cat allergy.

Recent findings: Reduction of cat allergen in indoor air with different air filtration systems and portable devices has been demonstrated in the majority of the studies. Recently, early and late asthmatic responses were significantly reduced using portable HEPA air cleaners in an environmental exposure chamber. This review provides a comprehensive overview of the current state of airborne Fel d 1 air filtration targeting the most efficient devices in cat allergen reduction. Novel emerging HEPA filters are targeting reduction of cat indoor asthma trigger so patient can might benefit from efficient solution.

Keywords: Air cleaners; Air filtration; Cat allergen; Indoor exposure control.

Publication types

  • Review

MeSH terms

  • Air Filters*
  • Air Pollution, Indoor / prevention & control*
  • Allergens*
  • Animals
  • Cats*
  • Environmental Exposure / prevention & control*
  • Glycoproteins*
  • Humans
  • Hypersensitivity / epidemiology


  • Allergens
  • Glycoproteins
  • Fel d 1 protein, Felis domesticus