Dust mite allergens in the office environment

Area of Science:

• Environmental Health
• Allergology
• Occupational Health

Background:

• Dust mite infestation is a known issue in residential settings, but its prevalence and impact in office environments are less understood.
• Health complaints in offices can be multifactorial, with allergens being a potential contributing factor.

Purpose of the Study:

• To assess the extent of dust mite infestation in office settings.
• To determine the contribution of dust mite allergens to health complaints in the workplace.
• To evaluate the applicability of residential dust mite assessment methods in an office environment.

Main Methods:

• Dust mite allergen levels were measured using Der p I allergen-specific ELISA in 14 offices.
• A liquid chromatography method for guanine was considered as a backup for identifying other mite species.
• Investigated offices experiencing numerous health complaints.

Main Results:

• Approximately 50% of the investigated offices showed evidence of dust mite populations.
• Four offices exceeded the threshold of 1 microgram/g for Der p I dust levels.
• In two offices, dust mite allergens were the primary cause of health complaints; in two others, they were a contributing factor.
• Infestations were localized, with office chairs identified as a primary habitat.

Conclusions:

• Dust mite infestation is a significant issue in some office environments, contributing to occupant health complaints.
• Standardized methods for residential dust mite assessment can be adapted for office settings.
• Targeted cleaning of fabric furnishings, including steam cleaning, is recommended for remediation.