Aeroallergens in Bangkok, Thailand

Area of Science:

• Aerobiology
• Environmental Science
• Allergen Monitoring

Background:

• Understanding the distribution of airborne allergens is crucial for public health, especially in urban environments.
• Previous aerobiological data for Bangkok, Thailand, was limited, necessitating a comprehensive survey.

Purpose of the Study:

• To conduct a multi-year survey of atmospheric pollens and mold spores in Bangkok.
• To identify dominant airborne fungal spores and seasonal patterns of pollen prevalence.

Main Methods:

• Utilized Durham's gravity method for daily sampling of atmospheric pollens and molds.
• Conducted the survey in Bangkok, Thailand, over a three-year period (January 1972 - December 1974).

Main Results:

• Grass pollen was consistently detected throughout the year, with a significant peak observed from November to February.
• Weed and tree pollens were present in lower concentrations compared to grass pollen.
• Fungal spores from the class Fungi Imperfecti predominated, with Hormodendrum being the most frequently identified.
• Other significant fungal spores included Helminthosporium, Alternaria, smut, Fusarium, and rust, in descending order of prevalence.

Conclusions:

• The study established a baseline for airborne pollen and mold spore levels in Bangkok.
• Grass pollen and specific fungal spores (Hormodendrum) represent significant components of the Bangkok aerobiota.
• Findings provide valuable data for allergy sufferers and environmental health assessments in the region.