Aeroallergen exposure in the elementary school setting.

Ten elementary schools in southern California were surveyed to identify and quantitate allergens present in the school environment. The Anderson sampler was used to quantitate viable molds. Pollens and non-viable molds were determined by roto rod techniques. Statistically significant differences existed between indoor and outdoor mean counts for molds and pollens identified by roto rod techniques. Viable mean mold spore counts inside schools compared favorably to local homes. House dust mites were found in considerably lower concentrations in the schools than in homes in the same area. Results indicate that the school interior is a protective environment for individuals sensitive to mold, pollens, and house dust mites.