Streptomyces is a large genus of spore-forming Gram-positive bacteria that belongs to the Actinobacteria class. As one of the typical outdoor bacteria, it is found mostly in soil and is often involved in decomposition/degradation of organic substances. Several Streptomyces strains have been isolated from moisture-damaged building materials and are believed to thrive in damp indoor environments in association with mold growth1-2. Streptomycetes are known to produce many secondary metabolites, antibiotics and toxins3. Several strains have been found to be associated with development of farmer's lung disease4 and hypersensitivity pneumonitis5-6.

1 Rintala et al., (2002) Lett. Appl Microbiol., 34, 439-443.
2 Suihko et al., (2009) Indoor Air, 19, 268-277.
3 Dhanasekaran et al., Actinobacteria. ExLi4EvA. Feb.11, 2016.
4 Lacey et al., (1988) Annals of Occupatinal Hygiene, 32, 515-533.
5 Kapadia et al., (2007) Am. J. Clin. Pathol., 127(4), 619-624.
6 Kagen et al., (1981) J. Allergy Clin. Immunol., 68, 295-299.

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