aetiology

Last reviewed 01/2018

Disease Antigen Source

• Farmer's lung Thermoactinomycetes wet hay vulgaris Micropolyspora faeni

• Birdfancier's bird feathers and Pigeons, parrots, lung droppings budgerigars

• Maltworker's lung Aspergillus clavatus Malt, mouldy hay

• Mushroomworker's Micropolyspora faeni Mushroom lung compost

• Humidifier fever Thermophilic Air humidifiers actinomycetes, amoeba

• Bagassosis Thermoactinomyces Mouldy bagasse sacchari

These conditions occur because the inhaled particles are sufficiently small to reach and deposit in the alveoli.