On respirable organic antigens, mattresses and some idiopathic lung diseases.

In surveying the environment of workers in a mattress factory thermophilic actinomycetes as well as phycomycetes and aspergillus species were isolated readily from work room dust, finished bat, sissal and the interior of baled linters. Those persons working with cotton products were shown to have a heavy, daily exposure to organisms known to be implicated in the pathogenesis of hypersensitivity pneumonitis. The authors suggest that further study of the inhaled antigens to which cotton workers are exposed is indicated before discarding immunologic mechanisms to explain the development of byssinosis and other pulmonary disorders to which such workers are subject.