Relación del histoplasma capsulatum con las gallinas y otras aves : Estudio expositivo
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s.d.1964
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Histoplasma capsulatum is a soil fungus with a wide geographic distribution. It has not only been isolated repeatedly from soil specimens but both its micro- and macroconidia have been demonstrated in soil, air, and water. The occurrence of these spores in nature unequivocally proves that H. camsulatum actively grows and multiplies in soil as a saprophyte and does not merely reside there in a passive state. This conclusion is based on the fact that conidia are not produced by H. capsulatum in its parasitic phase Ecological studies carried out in Williamson County, Tennessee, with Zeidberg during the period of 1952-1955, first revealed that H. capsulatum is not uniformly distributed in nature. It was found that chicken habitats favored the development of this mold. Soil samples collected at random yielded few isolates of H. capsulatum, while specimens collected in and around chicken yards, especially chicken coops, gave a higher percentage of positive cultures Chickens are not the sole species of birds associated with H. camsulatum habitats. It has been recovered from sites enriched with the dung of grackles (Ouscalus quiscula), oil birds (Steatornis caripensis), pigeons (Columba livia), and starlings (Surnus vulgaris) Avian habitats or soil obtained from such areas and transported elsewhere have been incriminated on numerous occasions as the source of outbreaks of acute pulmonary histop. ...(AU)
Título traduzido
Relationship of histoplasma capsulatum to avian habitats : A review
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