Does a wall area of 2'x2' of Stachybotrys or Aspergillus need to be contained?
TestAmerica Expert: Ariunaa Jalsrai
Expert's Response:
Indoor growth of Aspergillus, Stachybotrys, and other indicator fungi of water damaged environments warrants a risk assessment, which usually requires future investigation. Mold exposure does not always present a health problem indoors. However, some people are sensitive to molds. These people may experience symptoms such as nasal congestion, eye irritation, wheezing, or skin irritation when exposed to molds. Severe reactions may include fever and shortness of breath. Immunocompromised persons and persons with chronic lung diseases are at increased risk for opportunistic infections and may develop fungal infections in their lungs.
I am not an industrial hygienist; however, I would recommend removing the mold growth from the wall.
Question # 2 of 3:
The indoor air has 5 times more mold (Aspergillus) than the outdoors. Is this normal or anything to worry about?
Expert's Response:
Molds are very common in buildings and homes and will grow anywhere indoors where there is moisture. The most common indoor molds are Cladosporium, Penicillium and Aspergillus. In the indoor environment, Aspergillus can be found in household dust, building materials, ornamental plants, flower arrangements, tobacco, food and water. Some Aspergillus species can cause adverse health effects.
Approximately 20 species of Aspergillus have been reported as causative agents of opportunistic infections in humans. Aspergillus fumigatus is the most important opportunist and is commonly encountered in hospitals as well as other environments. Other species, such as A. flavus, A. terreus, A. niger, and A. nidulans, can also cause human infections. I would recommend performing speciation of Aspergillus.
Question # 3 of 3:
Should we mix the bleach a little stronger, say 1 part bleach to 5 parts of water or would the standard of 1 part bleach to 10 parts water be OK?
Should we mix the bleach a little stronger, say 1 part bleach to 5 parts of water or would the standard of 1 part bleach to 10 parts water be OK?
Expert's Response:
I am not a professional hygienist, so I could not answer this question, but The CDC provides excellent on-line resources: http://www.cdc.gov/mold/stachy.htm.
I am not a professional hygienist, so I could not answer this question, but The CDC provides excellent on-line resources: http://www.cdc.gov/mold/stachy.htm.
For example, mold growth can be removed from hard surfaces with commercial products, soap and water, or a bleach solution of no more than 1 cup of bleach in 1 gallon of water.
nice blog very informative and detailed blog very useful thnks for sharing such detailed information
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