Microbe of the month: Ulocladium

Classification: Funghi

Cultured from / Found in: HVAC Coils and Filters

Associated Health Risks: Subcutaneous, Cutaneous, and Nail Infections. Allergy Exacerbation.


About the Funghi

Ulocladium is an asexually reproducing saprophytic fungi, belonging to the family Pleosporaceae. These fungi mainly dissolve plant organic matter, and can often be found on substrates such as plant debris, lumber, paper, and water-damaged building materials. Certain species are plant pathogens and frequent food contaminants. Ulocladium spores are airborne allergens, and certain species are reported as opportunistic human pathogens


Health Risks

Ulocladium fungi mostly cause opportunistic infections in immunocompromised individuals and has been reported in some cases of subcutaneous, cutaneous, and nail infections, due to weakened immune systems. One case of cutaneous mycosis caused by U. chartarum was reported in a heart transplant recipient. Their spores are known allergens. U. botrytis is regarded as a source of indoor Air allergen sensitisation and is used as a sample for skin-prick tests for mould and work-related allergens. This is because U. botrytis produces two main allergens, one of which is the “Alt a 1” that is also contained in Alternaria. Symptoms of allergies caused by this mould are similar to the symptoms caused by those compatible with rhinitis and asthma. Studies consider Ulocladium, Alternaria, and Stemphylium genera, as one of the most common mould allergens.


Safe indoor air from a serviced HVAC system means a lower particle count and less breathing difficulties for occupants of the building. Clean-Air are IICRC mould remediation experts with the knowledge and experience to test, treat and eliminate serious mould-related risks within your HVAC system. If you have concerns about the air you are breathing, or would like an HVAC health check, contact our team today.