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2003年5月1日

1分钟阅读

零星的防御

大城市在天花疫苗接种方面行动迟缓

作者：马克·阿尔珀特

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Mark Alpert is an internationally bestselling author of science thrillers. His latest novel is Saint Joan of New York: A Novel about God and String Theory. Follow him at www.markalpert.com.

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This article was originally published with the title “Spotty Defense” in 大众科学 Magazine Vol. 288 No. 5 (May 2003)
doi:10.1038/scientificamerican052003-5aJKVMbuFWJydbKvxfJfbT

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