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 可笑的“党思维” |
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凡是社会的进步都归功于党的正确领导！医药的进步(抗生素)也是党赐的人均寿命! -- Anonymous - (437 Byte) 2004-7-12 周一, 上午11:27 (136 reads) |
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作者：Anonymous 在 罕见奇谈 发贴, 来自 http://www.hjclub.org
By the 1930s new techniques for growing viruses in the laboratory led to vaccines against viral diseases. These included a yellow fever vaccine in the late 1930s and the first effective influenza vaccine in the 1940s. The American physician Jonas E. Salk developed a polio vaccine in 1954. Later virologist Albert B. Sabin developed a safer oral polio vaccine, which was in wide use by the 1960s. Later came vaccines for other childhood diseases, including measles, German measles, mumps, and chicken pox.
作者：Anonymous 在 罕见奇谈 发贴, 来自 http://www.hjclub.org |
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