Mold hits the highest September level in ten year record on. The mold spores count in D.C. rose to 47,483 spores per cubic meters, the highest in the U.S. Army Centralized Allergen Extract Lab’s ten year record for September. September tends to be Washington’s moldiest month. The first three weeks of September, mold counts were about 75% above normal.
Graph illustrates the above average mold spore concentrations in Washington, D.C. during 2011 (green line). Graph does not include (most current) last week of September 2011. Concentrations also spiked in June 2009, at the end of one of the wettest springs on record. (Susan Kosisky – Walter Reed Army Medical Center)
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