Observation on the decline of histoplasmal infections in school children: Milan, Michigan, 1958-1968.
D000818:Animals; D004199:Disease Vectors; D004391:Dust; D006659:Histoplasmin; D006660:Histoplasmosis / Q000453:epidemiology* / Q000517:prevention & control; D006801:Humans; D008824:Michigan; D012572:School Health Services; D012882:Skin Tests; D012988:Soil Microbiology
D004391:Dust; D006659:Histoplasmin