One in five lung cancer sufferers have a particularly virulent strain called small cell lung cancer which kills all but three per cent of sufferers within five years of diagnoses.
1/5的癌症患者带有一种特别的有毒病株，称为小细胞肺癌，这种肺癌五年内杀死了近3%的确诊患者。
The authors argue the version of the disease that caused the medieval plague is likely extinct, but suggest that further study could reveal how it may have evolved into a less virulent strain.
作者们称引起中世纪瘟疫的品种可能已经灭绝了，但是他们认为进一步的研究可以揭示它是如何进化到一种没那么致命的类型。
Studies have detected no signs that the virus has mutated to a more virulent or lethal form.
经研究未发现迹象说明病毒已突变为更具毒性或更致命的形式。
Half of the victims have been hospitalised, a high rate that may indicate an especially virulent strain of E. coli.
半数受害者都已住院，如此高的住院率表明这可能是一种毒性特别强的大肠杆菌菌株。
All of a sudden, a lot of well-maintained old cars, especially sportier models, have begun to fail in surprising numbers-as if struck down by some virulent new disease.
许多修了又修的老爷车，尤其是运动型跑车，刹那间销声匿迹了，数量之众让人称奇，就好像全都被某种新型恶性传染病夺去了生命。
During the 20th century, health authorities made progress in controlling the disease but, in recent years, virulent new strains have emerged in poor countries in which antibiotics are often misused.
20世纪时健康机构在防治此病上取得了大的进展。但是近些年来这种疾病在贫困国家又出现了，而且这些国家乱用抗生素来治疗这种病。
A cure for MRSA appears to be within grasp after scientists claimed to have developed a drug that destroys the most virulent strains of the deadly superbug.
一种新的对付MRSA（一种对抗生素有极强抗药性的金黄葡萄状球菌，是医院内主要的感染源）的方法即将成功。科学家宣称已经研发了一种新的药物可以摧毁这种致命的超级细菌。
In recent days, genetic sequencing analyses of this flu have suggested it is not as virulent as suspected.
最近几天，对H1N 1流感病毒的基因测序分析表明，这种病毒的毒性不像之前所认为的那样致命。
Sharon StoneYour this does not have the conscience, inhuman, feeble-minded virulent woman.
莎朗斯通你这个没有良知，灭绝人性，低能恶毒的女人。
Sharon StoneYour this does not have the conscience, inhuman, feeble-minded virulent woman.
莎朗斯通你这个没有良知，灭绝人性，低能恶毒的女人。
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