Table 3.

The prevalence and levels of mesophilic and hydrophilic fungal species identified from floor or chair dust samples.^a

	Floor (n = 328)			Chair (n = 326)
	Prevalence No. (%)	Level (CFU/g dust)		Prevalence No. (%)	Level (CFU/g dust)
Species in samples		Median	Maximum		Median	Maximum
Yeastsb	250 (76.2)	2,400	1.2 × 106	208 (63.8)	2,340	8.6 × 105
Aureobasidium pullulans	175 (53.4)	770	8.0 × 104	244 (74.8)	1,500	1.5 × 106
Epicoccum nigrum	121 (36.9)	400	1.4 × 104	171 (52.4)	710	3.3 × 104
Alternaria alternata	70 (21.3)	710	1.1 × 104	74 (22.7)	740	1.8 × 104
Phoma herbarumb	54 (16.5)	2,850	1.0 × 106	71 (21.8)	3,600	5.9 × 106
Cladosporium sphaerospermum	48 (14.6)	1,100	3.0 × 104	51 (15.6)	1,200	1.6 × 105
Aspergillus niger	30 (9.1)	390	6.1 × 104	49 (15.0)	380	3.6 × 104
Chaetomium globosumb	27 (8.2)	770	1.4 × 104	50 (15.3)	390	4.0 × 104
Cladosporium cladosporioides	19 (5.8)	400	2.9 × 104	18 (5.5)	1,250	7.7 × 103
Fusarium solani	18 (5.5)	400	8.0 × 103	12 (3.7)	710	4.0 × 103
Cladosporium herbarum	16 (4.9)	1,800	1.2 × 104	13 (4)	710	2.8 × 104
Mucor plumbeusb	11 (3.4)	380	3.7 × 104	26 (8.0)	380	4.0 × 104
Rhizopus stoloniferb	9 (2.7)	370	3.7 × 103	23 (7.1)	370	3.6 × 103
Ulocladium chartarum	6 (1.8)	390	3.6 × 103	18 (5.5)	380	7.1 × 103
Stachybotrys chartarumb	4 (1.2)	2,200	1.7 × 104	5 (1.2)	380	4.0 × 103
Aspergillus flavus	2 ( < 1)	2,080	3.8 × 103	2 ( < 1)	2,550	3.7 × 103
Chrysonilia sitophila	2 ( < 1)	3,800	3.8 × 103	4 (1.2)	3,700	3.6 × 104
Penicillium expansum	2 ( < 1)	1,300	1.5 × 103	ND	ND	ND

ND, not detected.

^aThe LOD ranged between 350 and 400 CFU/g dust; samples < LOD for individual fungi are not included in statistical analyses presented in this table.

^bHydrophilic fungi; all other species in the table are mesophilic fungi.