youdao

Are these so-called BV-associated bacteria sufficiently virulent to cause spontaneous preterm birth when present only in modest increased frequency?

这些所谓的BV相关细菌当阳性率轻度升高后是否足以导致自发性早产？

youdao

The positiveness of the contact hemolysis was correlated with the virulence of bacteria when virulent or non-virulent strains of enterobacteria were compared.

比较强毒肠道菌及其无毒突变株的溶血能力与毒力相符；

youdao

Fortunately, the testing did not reveal strains of E. coli 0157, a particularly virulent form of the bacteria that was responsible for several outbreaks, and deaths, from serious foodborne illnesses.

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