Measurement of Horse Allergen (Equ cx) in Schools

Table 2

Horse allergen levels in vacuumed dust and airborne settled dust from Petri dishes in Study II.

	Vacuumed dust; (U/g dust)	Petri dish; (U/m^2/day)
Sampling year	2003	2003
Analysis year (standard ELISA assay)	2003	2003
No. of samples	116	116
Samples < dl	4%	72%
GM (total)	1343	73.9
GM, classes >12% horse contact	2051	96.2
GM, classes ≤12% horse contact	880	56.7