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Indoor Environmental Quality Management
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indoor air quality

The importance of air quality, particularly indoor air quality, cannot be overemphasized. Numerous studies have linked poor indoor air quality to a range of health problems including allergies, asthma, and other respiratory conditions. This paper delves into the role of indoor air quality in the development of allergies and asthma.


Indoor air quality can often be worse than outdoor air quality, significantly triggering allergy and asthma symptoms [1]. The concentration of pollutants is typically higher indoors due to limited ventilation and various sources of pollution. These pollutants include volatile organic compounds (VOCs), dust mites, mold, pet dander, and other allergens that can aggravate respiratory conditions like asthma.

Indoor Air Pollution and Asthma

Research has shown that exposure to indoor air pollution early in life contributes to the development of asthma throughout childhood and adolescence, particularly after age 4 years [5]. A study on indoor air pollution factors revealed that these factors could modify asthma severity, especially in inner-city environments [2].

Children spend a significant amount of time indoors, particularly in nurseries and primary schools. Several studies have demonstrated an association between exposure to indoor air pollution (IAP) and childhood asthma [4]. This relationship suggests the need for improved air quality in such environments to safeguard children’s health.

Allergens and Asthma

Extrinsic asthma, one of the two main types of asthma, has a known cause, such as allergies to dust mites [6]. Indoor environments typically harbor a variety of allergens, including dust mites, pet dander, and mold spores. When inhaled, these allergens can trigger an immune response leading to inflammation of the airways, characteristic of asthma.

Indoor Air Triggers

Indoor air triggers can be classified as either irritants or allergens [7]. Irritants include gases such as VOCs that can aggravate existing respiratory conditions like asthma. Allergens, on the other hand, can initiate an immune response leading to allergic reactions and potentially developing asthma.

Child Care Facilities and Indoor Air Quality

Childcare facilities and schools often have problems with indoor air quality because of overcrowding and insufficient ventilation [8]. In these environments, a family background may establish a history of allergies/asthma. Therefore, maintaining good indoor air quality in such facilities is vital for preventing the onset and exacerbation of these conditions.


The relationship between indoor air quality and the development of allergies and asthma is unequivocal. Exposure to indoor air pollutants and allergens can trigger and worsen these conditions. Therefore, improving indoor air quality, particularly in homes and child care facilities, should be a priority.


  1. Asthma and Allergy Foundation of America. (n.d.). Improving Indoor Air Quality.
  2. Permaul, P., et al. (2012). Indoor Air Pollution and Asthma in Children.
  3. National Academy of Sciences Institute of Medicine. (2000). Clearing the Air: Asthma and Indoor Air Exposure (Highlights).
  4. Ribeiro, H., et al. (2012). Indoor air pollution on nurseries and primary schools.
  5. American Academy of Allergy, Asthma & Immunology. (n.d.). Your Questions Answered on Air Pollution and Asthma.
  6. Centers for Disease Control and Prevention. (n.d.). Chapter 5: Indoor Air Pollutants and Toxic Materials.
  7. Asthma Initiative of Michigan (AIM). (n.d.). Indoor Air Quality.
  8. Arizona Department of Environmental Quality. (n.d.). Indoor Air Quality Issues for Child Care Facilities.
  9. Mayo Clinic. (2020, March 13). Asthma.
  10. World Health Organization. (2018). Indoor air quality guidelines: household fuel combustion.
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