Cladosporium Mold

Cladosporium mold is one of the most common and globally present molds in existence. It has around 40 species that are found in soil or on decaying organic matter and some studies that have been conducted in North America and in Europe claim that the mold is present outdoors year round, although the concentration of this mold is quite low during the winter.

In the summer, spore levels can reach from 2,000 to 50,000 particles per cubic meter of air. The air and concentration of these spores in your home are influenced by two factors: the outdoor concentration and whether the mold is growing in your house or not.

In the home, Cladosporium species manifest themselves as an infection in the walls, second to Penicillium species, Aspergillus species, and Wallemia sebi. It is prevalent on building materials that have gotten wet. The four species that occur most commonly are Cladosporium herbarum, Cladosporium sphaerospermum, Cladosporium cladosporioides, and Cladosporium macrocarpum. The spores of these molds are dispersed by air currents and are extremely common in outdoor environments; when they are found indoors, they grow on surfaces where moisture is present.

The different species of this mold that occur are not generally human pathogens unless a person’s immune system has been compromised in some way. They do, however, have the tendency to cause allergic reactions in certain people. Exposure to high levels of spores can induce asthma and chronic allergies. A concentration of 3000 spores per cubic meter of air space are usually seen as being of clinical importance. Some people may react to a lower concentration of these spores depending upon their own individual sensitivity to them. Infections of the toenails and skin can occur, along with some reports of sinusitis and some pulmonary infections, but only rarely do these occur.

These species of mold are detected quite easily in mold test kits and spore traps around the home and can appear as black, grey, green, or brown when it grows upon a surface. Generally speaking, the only negative effects associated with Cladosporium are allergic reactions and are less serious of a threat than molds such as Penicillin, Aspergillus, and Stachybotrys. Prolonged exposure to Cladosporium, however, can cause weakened immune systems and while they do not produce any mycotoxins of any significance, they do produce some volatile organic compounds that are associated with odors.


Jim Corkern is a writer and respected contributor to the Water damage restoration and mold remediation Industry. Visit his sites for more information.
http://www.floodingnc.info
http://www.floodnj.info