commensal bacterial infectious disease respiratory system disease actinomycosis A commensal bacterial infectious disease that results in infection, which is characterized by contiguous spread, suppurative and granulomatous inflammation, and formation of multiple abscesses and sinus tracts that may discharge sulfur granules, has_material_basis_in Actinomyces israelii, has_material_basis_in Actinomyces gerencseriae, has_material_basis_in Actinomyces naeslundii, has_material_basis_in Actinomyces odontolyticus, has_material_basis_in Actinomyces viscosus, has_material_basis_in Actinomyces meyeri, has_material_basis_in Propionibacterium propionicum, which require a break in the integrity of the mucous membranes and the presence of devitalized tissue to invade deeper body structures.