virulence in A Sentence

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    To explain, Ewald offers a proposition called"the evolutionary theory of Virulence.".

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    Possessing high Virulence, the virus causes the death of infected animals in 50-100% of cases.

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    However, about 20% develop severe disease which is commonly fatal, and there is evidence for increased Virulence of the virus[24].

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    Five distinct species of the Ebola Virus are known to cause infection, and their Virulence(i.e. the ability to cause serious symptoms) varies across these species.

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    The Virulence of this microorganism is relatively small, and only in some strains of gardnerella the final product of fermentation is acetic acid and amino acids.

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    These variants then replicate more aggressively with heightened Virulence that causes rapid T cell depletion, immune system collapse, and opportunistic infections that mark the advent of AIDS.

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    It should be emphasized that the spread of the pathogen does not depend on either the Virulence of the microorganism or the nature of the primary focus.

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    Vesicles from a number of bacterial species have been found to contain Virulence factors, some have immunomodulatory effects, and some can directly adhere to and intoxicate host cells.

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    To figure out what factors influence the amount of damage, or Virulence, done to either host, Purdue University researchers studied the effects of two strains separately and then together.

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    Disease can occur when immunity is low or impaired, when Virulence of the pathogen(its ability to damage host cells) is high, and when the number of pathogens in the body is great.

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    If the evolutionary theory of Virulence is correct," says Ewald,"we will never have a pandemic like 1918 again-- unless we once again see the same unusual circumstances of the western front.".

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    12

    The initial study is two years old, but Ribbeck published another study this month on mucins and the regulation of microbial Virulence that she believes can be the basis of creating a synthetic mucus.

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    13

    The probability of transmission from one person to another depends upon several factors, including the number of infectious droplets expelled by the carrier, the effectiveness of ventilation, the duration of exposure, the Virulence of the M. tuberculosis strain, the level of immunity in the uninfected person, and others.

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