早些时候，美国官方报道了首例美国公民，第二个死于流感病毒的人。
Earlier, American official reported the first American citizen and the second person to die of the virus in the Uinted State.
1967年报道了首例对青霉素相对不敏感的肺炎球菌，到1981多例多药耐药性肺炎球菌被报道。
In 1967 there were the first report of pneumococci that were relatively insensitive to penicillin and by 1981, there were cases of multiple drug resistance.
近日，一个由16位科学家组成的国际性团队报道了首例人的个体DNA序列总基因突变速率的直接测量数据。
An international team of 16 scientists today reports the first direct measurement of the general rate of genetic mutation at individual DNA letters in humans.
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