Dr. Jackson Kung’u has studied fungi and bacteria since 1988. He has proven knowledge of fungal biosystematics and is skilled in protocols for investigation, sampling, isolation and enumeration of molds and bacteria from various environments such as homes, schools, offices, hospitals, industrial, agricultural, and other work environments.
Jackson is an expert in identification of fungi to species level including the common indoor fungi such as StachybotrysStachybotrys sp. may produce a trichothecene mycotoxin- Satratoxin H – which is a poisonous by inhalation. The toxins are present on the fungal spores. Stachybotrys sp. grows on building material with high cellulose content and low nitrogen content. Stachybotrys sp. is rarely found in outdoor samples. It is usually difficult to find in indoor air samples unless it is physically disturbed or if it dries out and become airborne. There is controversy about toxigenic effects through inhalation of spores or mycelia., PenicilliumA large number of organisms have have been placed in this genus. Identification to species is difficult. Often found in aerosol samples. Penicillium is commonly found in soil, food, cellulose and grains. It is also found in paint and compost piles. It may cause hypersensitivity pneumonitisInflammation of the lungs., allergicCaused by or relating to an allergyA damaging immune response by the body to a substance, esp. pollen, mold spores, fur, a particular food, or dust, to which it has become hypersensitive. or having an allergyA damaging immune response by the body to a substance, esp. pollen, mold spores, fur, a particular food, or dust, to which it has become hypersensitive. to (a substance). alveolitis in susceptible individuals. It is reported to be allergenic. It is commonly found in carpet, wall paper, and in interior fiberglass duct insulation. Some species can produce mycotoxinsToxic substances produced by fungi.. Common cause of extrinsic asthmaNarrowing of the bronchial tubes, where the muscles go into spasm and the patient has difficulty breathing. (immediate-type hypersensitivity: type I). Acute symptoms include edema and bronchiospasms, chronic cases may develop pulmonary emphysema., AspergillusAspergillus spp are reported to be allergenic. Members of this genus are reported to cause ear infections (see Aspergillus niger) . Many species produce mycotoxins (see Aspergillus flavus) which may be associated with disease in humans and other animals . Toxin production is dependent on the species or a strain within a species and on the food source for the fungus. Some of these toxins have been found to be carcinogenic in animal species. Several toxins are considered potential human carcinogens. Common cause of extrinsic asthma (immediate-type hypersensitivity: type I)., FusariumFusarium sp. are found on a wide range of plants and in humidifiers. Several species in this genus can produce potent trichothecene toxins. Some species also produce vomitoxin on grains during unusually damp growing conditions. Poisoning by these toxins occur primarily through ingestion of contaminated grains or possibly inhalation of spores. The genus can produce hemorrhagic syndrome in humans (alimentary toxic aleukia). This is characterized by nausea, vomiting, diarrhoea, dermatitis, and extensive internal bleeding. Fusarium is reportedly allergenic and some species are frequently involved in eye, skin and nail infections., CladosporiumCladosporium spp are commonly found outdoors. The outdoor numbers are reduced in the winter. The numbers are often high in the summer. Often found indoors in numbers less than outdoor numbers. It is a common allergen. Indoor Cladosporium sp. may be different than the species identified outdoors. It is commonly found on the surface of fiber-glass duct liner in the interior of supply ducts and on cold, condensing surfaces. A wide variety of plants are food sources for this fungus. It is found on dead plants, woody plants, food, straw, soil, paint and textiles. It’s allergenic., MucorMucor sp. is often found in soil, dead plant material, horse dung, fruits and fruit juice. It is also found in leather, meat, dairy products, animal hair and jute. Mucor sp. may be allergenic (skin and bronchial tests) and may also cause mucorosis in immune compromised individuals. The sites of infection are the lung, nasal sinus, brain, eye and skin. Infection may have multiple sites., UlocladiumUlocladium sp. is isolated from dead plants and cellulose materials. It’s also found on textiles., AlternariaAlternaria is a very common allergen. It is often found in carpets, textiles, and on horizontal surfaces in building interiors. Often found on window frames. Outdoors it may be isolated from samples of soil, seeds and plants. It is commonly found in outdoor samples. It may be related to baker’s asthma. It has been associated with hypersensitivity pneumonitis. The species Alternaria alternata, is capable of producing tenuazonic acid and other toxic metabolites which may be associated with disease in humans or animals. Common cause of extrinsic asthma (immeadiate-type hypersensitivity: type I). Acute symptoms include edema and bronchiospasms, chronic cases may develop pulmonary emphysema., Chaetomium, ScopulariopsisScopulariopsis sp. may produce arsine gas if growing on arsenic substrate. This can occur on wallpapers covered with paris green. It has been found growing on a wide variety of materials including house dust. Scopulariopsis sp. is associated with type III allergyA damaging immune response by the body to a substance, esp. pollen, mold spores, fur, a particular food, or dust, to which it has become hypersensitive.. and several other indoor moulds.
Over the last 3 years, Jackson has been reviewing grow ops remediation reports and providing certification that the property is free of biological and chemical hazards and fit for occupancy before power can be restored by the Electrical Safety Authority of Ontario.
Jackson is currently the Principal Microbiologist at Mold & Bacteria Consulting Laboratories (MBL) Inc. Over the last 5 years Jackson has reviewed over 5000 laboratory reports for fungi and bacteria samples collected from indoor environments across Canada.
Jackson designed and instructs on a mold training course “Mold Recognition, Assessment And Control.” The course had been recognized for continuous education credits by American Board of Industrial Hygiene (ABIH) and the Canadian Registration Board of Occupational Hygienists (CRBOH).
Dr. Kung’u has provided professional development courses at the AIHce Conferences such as the AIHce 2009 (Toronto, Ontario, Canada); AIHce 2010 (Denver, Colorado, USA) and AIHce 2011 (Portland, Oregon, USA).
AIHA – American Industrial Hygiene Association – Full Member
MSA- Mycological Society of America- Full Member
ASTM International- Past Member.