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Defining
Mold - The presence of
mold, water damage, or musty odors should be addressed
immediately. In all instances, any source(s) of water
must be stopped and the extent of water damage determined.
Water damaged materials should be dried and repaired.
Environmental sampling is then recommended to determine
the type and extent of the existing mold. Mold is a
structural, health and environmental problem. some mold
defects can't be seen and will only be detected through
sampling.
Stachybotrys

This mold is a slow
growing fungus. It grows well on high cellulose materials
like straw, grass, saw dust, lumber and drywall plaster
board or ceiling tiles. Like a fungi, it requires a
moisture source. About15 species of Stachybotrys can
be found worldwide, but it is most common in the Western
U.S. Generally, this mold grows where the relative humidity
is above 55 percent or the material is water-saturated.
In studies conducted in North America, Stachybotrys
was found in 2 to 3 percent of home environments sampled.
Disease
- Stachybotrys atra spores are breathed into the lungs.
Persons with chronic exposure to the toxin report cold
or flu-like symptoms with sore throat, diarrhea, headaches,
fatigue, dermatitis, intermittent local hair loss and
general malaise. The toxins may also suppress the immune
system. Infants may be particularly susceptible to the
effects of these inhaled mycotoxins because their lungs
are growing very rapidly. Mycotoxins are lipid-soluble
and are readily absorbed by the intestinal lining, airways,
and skin.
How to Control
Stachybotrys - Homes and
buildings with water damage should be repaired, the
source of moisture eliminated, and all moldy material
should be removed.Reduce humidity in the home with adequate
venting of appliances such as dryer vents bathroom and
kitchen cooking vents, etc. Even "excessively sealed"
homes with inadequate air exchange can cause high humidity
inside from showers, cooking, laundry, etc. Although
some molds can be killed by cleaning the moldy surface
with chlorine, Stachybotrys oten has a germ, mycelium,
that is buried inside the water damaged surface that
may be inaccessible to chlorine. It is best to remove
all of the water damaged material.
Aspergillus

A group of molds which
is found everywhere world-wide, especially in the autumn
and winter in the Northern hemisphere. Only a few of
these molds can cause illness in humans and animals.
Most people are naturally immune and do not develop
disease caused by Aspergillus. However, when disease
does occur, it takes several forms.
Disease
- The type of diseases caused by Aspergillus are varied,
ranging from an ‹allergyŠ-type illness to
life-threatening generalised infections. Diseases caused
by Aspergillus are called aspergillosis. The severity
of aspergillosis is determined by various factors but
one of the most important is the state of the immune
system of the person.
Allergic
Bronchopulmonary Aspergillosis (ABPA)
- This is a condition which produces an allergy to the
spores of the Aspergillus moulds. It is quite common
in asthmatics; up to 20% of asthmatics might get this
at some time during their lives.
Aspergilloma
- The type of diseases caused by Aspergillus are varied,
ranging from an ‹allergyŠ-type illness to
life-threatening generalised infections. Diseases caused
by Aspergillus are called aspergillosis. The severity
of aspergillosis is determined by various factors but
one of the most important is the state of the immune
system of the person.
Aspergillus
Sinusitis - The type of
diseases caused by Aspergillus are varied, ranging from
an ‹allergyŠ-type illness to life-threatening
generalised infections. Diseases caused by Aspergillus
are called aspergillosis. The severity of aspergillosis
is determined by various factors but one of the most
important is the state of the immune system of the person.
Invasive
Aspergillosis - The type
of diseases caused by Aspergillus are varied, ranging
from an ‹allergyŠ-type illness to life-threatening
generalised infections. Diseases caused by Aspergillus
are called aspergillosis. The severity of aspergillosis
is determined by various factors but one of the most
important is the state of the immune system of the person.
Penicillium

Some Penicillium species
are fairly common indoor fungi, even in clean environments.
This particular specie of fungi can proliferate in abundance
in indoor environments. P. species can be found at the
sub-basement levels offices and rooms, in libraries,
auditorium, storage room of paper materials and also
in ventilation systems. Some P.species can produce small,
nondescript conidia and complex mixtures of metabolites
that are more or less toxic.
Like all other molds,
spores have the highest concentrations of mycotoxin,
although the vegetative portion of the mold, the mycelium,
can also contain the poison.
Disease
- Exposure to the various penicillium toxin can result
in the following ill health effects:
- Patulin, a toxin from P.
expansum: cytotoxic and/or carcinogenic
- Citrinin, a toxin from
P. citrinum, - expansum & - viridicatum: nephrotoxic
- Ochratoxin, a toxin from
P. cyclopium & -viridicatum: nephrotoxic
Poria

Two major differences
between poria and ordinary decay fungi are that ordinary
decay fungi require the structure to provide the water
(green wood, rain and plumbing leaks, condensation),
while poria provides its own water through rhizomorphs
connected to moist soil outside the structure, and poria
dies quickly when deprived of water, while ordinary
decay fungi usually just go dormant. These differences
make both the detection and control of poria very different
from those of ordinary decay fungi. An inspector who
does not accurately diagnose poria infection can make
a company responsible for repairing extensive decay,
including that already repaired, within less than one
year; or, in the extreme, razing and rebuilding the
entire structure. This presentation provides illustrations
of how to diagnose, evaluate and control poria infections
and an opportunity to question two people with experience
with this fungus. |