In this online-only supplement to the September/October 2010 issue, a correction must be noted for the article by James Krieger et al. In the section “House Dust Mites,” the unit of measure in the following sentences was published as μg/mg. That is incorrect. The unit of measure should be given as μg/g, as shown in the text below.
“A body of clinical and epidemiologic evidence suggests that exposure to Der p or Der f antigens at levels greater than 2 μg/g is associated with sensitization and above 10 μg/g with exacerbation of established asthma in mite-sensitized persons.9,10 These cut-points are often used to assess exposure risk in field studies. A recent survey found that more than 80% of homes in the United States have detectable levels of house dust mite allergen in the bedroom, 46% have levels above 2 μg/g, and 24% have levels above 10 μg/g.11”
1. Krieger J, Jacobs DE, Ashley PJ, et al.. Housing interventions and control of asthmarelated indoor biologic agents: a review of the evidence. J Public Health Manag Pract. 2010;16(5):S11–S20.