| 词汇 | virulence |
| 释义 | virulence noun[ U ] uk /ˈvɪr.ə.ləns/ us /ˈvɪr.jə.ləns/ the danger and speed of spreading of a disease: （疾病的）致命性，严重性 The virulence of the disease is causing great concern in medical circles.这种病的高致命性已经引起了医学界的极大关注。 formal very strong feelings of hating or opposing something or someone: 恶毒;狠毒 We are witnessing racism of a virulence that we haven't seen in Europe since the 1940s.我们正在亲眼目睹欧洲自20世纪40年代以来从未出现过的恶毒的种族主义。 Passing on illness & causing disease aerosolize avirulent communicability community transmission contact tracer contagious epidemic fester infect infestation interepidemic interpandemic mediastinum non-communicable skin to skinidiom spreader super-spreader transferable transmissibility transmit You can also find related words, phrases, and synonyms in the topics: Feelings of dislike and hatred Power and intensity Examples of virulencevirulence Tuberculosis and typhus were not difficult to diagnose and there is no evidence that their autonomous virulence had declined. The usual argument is that cooperation consists in a reduction of virulence; in other words, avirulence is a cooperative restraint in host exploitation. Rather, virulence may also derive from toxin-mediated alteration of host immune responses prior to sepsis and toxaemia. Population studies demonstrate that the small amount of variation defines three clonal lineages where phenotypes such as virulence are associated with a single lineage. The ability to endocytose has been correlated with the virulence of the organism. Blood from mice which developed infections was passaged repeatedly through mice and then rats at 3 day intervals to increase virulence, before cloning in mice. The diversity among clusters may correspond to presence of these virulence factors. The ability of meningococcal strains to cause invasive disease and their subsequent virulence are variable. In a warmer climate, the agent might not be able to withstand the environmental changes, resulting in the decay of its virulence. Genes coding for metabolic functions or virulence factors are the main targets for producing safe vaccine strains. Specific virulence determinants that are required by strains to cause invasive diseases are unknown. Alternatively, while speculative, it is possible that all these strains are derived from the seventh-pandemic strain by the absence or loss of virulence genes. Other virulence factors include the ability to cause attaching-and-effacing lesions in the intestine and plasmid encoded haemolysins. All strains possessed the toxin genes and the other virulence factors investigated. The aim, therefore, was to determine if additional therapeutic antibiotic use was associated with changes in virulence gene prevalence. See all examples of virulence These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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