A survey of sero-immunity against epidemic typhus among certain population groups in Peru [0.03%]
秘鲁某些人群地方性斑疹伤寒免疫状况的血清学调查
J A MONTOYA,M E JORDAN,L KVAMME et al.
J A MONTOYA et al.
Studies on the North American arthropod-Borne encephalitides. VIII. Equine encephalitis studies in Louisiana [0.03%]
北美节肢动物传播的脑炎研究(VIII).路易斯安那州马脑炎的研究
R E KISSLING,R W CHAMBERLAIN,D B NELSON et al.
R E KISSLING et al.
Studies of a waterborne outbreak of amebiasis, South Bend, Indiana. III. Investigation of family contacts [0.03%]
Indiana南本德市一次经水传播的阿米巴病暴发流行的研究（三）：家庭接触者调查研究
M M BROOKE,D M MELVIN,R SAPPENFIELD et al.
M M BROOKE et al.
The geographic distribution of histoplasmin reactors among school age children within a rural Iowa county [0.03%]
艾奥瓦州一郡学龄儿童组织内.histoplasmin反应者的地理分布状况
J T GRAYSTON,R H HEEREN,M L FURCOLOW
J T GRAYSTON
R B BURROWS,G E KLINK
R B BURROWS