Indoor bioaerosols and asthma: Overview, implications, and mitigation strategies

Area of Science:

• Environmental Health
• Infectious Disease Epidemiology
• Allergy and Immunology

Background:

• Bioaerosols, originating from plants, animals, fungi, bacteria, and viruses, represent a significant environmental exposure linked to asthma.
• Diverse bioaerosols impact asthma through distinct pathways, and individual susceptibility varies, influencing mitigation effectiveness.
• Current asthma management guidelines include exposure reduction strategies, but building ventilation standards may not specifically protect asthmatics.

Purpose of the Study:

• To review current knowledge on bioaerosols associated with adverse asthma outcomes.
• To discuss effective mitigation strategies for various bioaerosol triggers.

Main Methods:

• Literature review summarizing research on bioaerosols and asthma.
• Analysis of different bioaerosol types (allergens, fungi, bacteria, viruses) and their clinical relevance.
• Evaluation of exposure reduction and mitigation techniques.

Main Results:

• Bioaerosols from various biological sources are clinically relevant to asthma.
• Different bioaerosols affect asthma via unique mechanisms, necessitating tailored susceptibility considerations.
• Source control (e.g., reducing resuspension, integrated pest management, moisture control) and enhanced air filtration are key mitigation strategies.

Conclusions:

• Understanding bioaerosol-asthma links is crucial for effective management.
• Source control and air filtration are primary methods for reducing bioaerosol exposure in asthmatics.
• Further research into specific bioaerosol pathways and individual susceptibility can refine mitigation strategies.