School building

Indoor pollutant exposure

Southern location

Students MORE likely to have high exposure to:

・ Cladosporium herbarum

・ Streptomyces spp

Western/rural location

Students LESS likely to have high exposure to:

・ Mycobacterium spp

・ Streptomyces spp, Alternaria alternate, Cladosporium herbarum, Trichoderma viride

Sea coast location

Students MORE likely to have high exposure to:

・ PenAsp, Alternaria alternate and Streptomyces spp

Internal location

Students MORE likely to have high exposure to:

・ Endotoxin and Mycobacteria

・ Aspergillus versicolor and Cladosporium herbarum

School constructed before 1970

Students MORE likely to have high exposure to:

・ Endotoxin and Mycobacteria spp

・ Streptomyces spp

Schools converted prior to 2006

Students MORE likely to have high exposure to:

・ Cladosporium herbarum

・ Mycobacterium spp

South facing class windows

Students MORE likely to have high exposure to:

・ Endotoxin and Alternaria alternate

Small openable class window areas (<57%)

Students MORE likely to have high exposure to:

・ Trichoderma viride, Cladosporium herbarum, Alternaria alternate,

・ Streptomyces spp

・ Mycobacteria spp and cat allergen

Classroom windows facing a street

Students MORE likely to have high exposure to:

・ Alternaria alternate and Streptomyces spp

Direct sunlight in classroom

Students MORE likely to have high exposure to:

・ Trichoderma viride and Cladosporium herbarum

Curtained area on classroom windows less than mean (11 m2)

Students LESS likely to have high exposure to:

・ Cladosporium herbarum, Streptomyces spp

・ Mycobacteria spp

Crowded classrooms (<2 m2 per child)

Students MORE likely to have high exposure to:

・ Cat and dog allergens

Humid and visible mould damage in classroom

Students MORE likely to have high exposure to:

・ Mycobacteria spp

・ Cladosporium herbarum, PenAsp, Trichoderma viride

Class windows kept closed during cleaning

Students MORE likely to have high exposure to:

・ Trichoderma viride and Cladosporium herbarum

・ Cat allergens

Daily sweeping of class floor

Students MORE likely to have high exposure to:

・ Pen Asp, Trichoderma viride, Cladosporium herbarum and cat allergens

Class floors washed more than once per week

Students MORE likely to have high exposure to:

・ Cladosporium herbarum and Streptomyces spp

・ Mycobacterium spp

Class flat furniture surfaces never dusted

Students MORE likely to have high exposure to:

・ Trichoderma viride, Alternaria alternate, Streptomyces spp

・ Mycobacteria spp

Refurbishment of class walls during previous 12 months

Students LESS likely to have high exposure to:

・ Endotoxin

・ PenAsp, Aspergillus versicolor and Cladosporium herbarum

・ Cat and dog allergens

Use of pesticides in school

Students MORE likely to have high exposure to:

・ Endotoxin

Students LESS likely to have high exposure to:

・ Streptomyces spp and Mycobacteria spp