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What is the primary difference between virulence and pathogenicity?
What is the primary difference between virulence and pathogenicity?
- Virulence is a qualitative measure, while pathogenicity is a quantitative measure.
- Virulence is a measure of a pathogen's ability to cause disease, while pathogenicity is a measure of its ability to infect.
- Virulence can be quantified, while pathogenicity cannot. (correct)
- Pathogenicity is a measure of a pathogen's ability to cause disease, while virulence is a measure of its ability to infect.
Which of the following best describes the term 'asymptomatic infection'?
Which of the following best describes the term 'asymptomatic infection'?
- An infection that always results in the death of the host.
- An infection that is always latent.
- An infection that results in severe symptoms.
- An infection that does not produce obvious, detectable symptoms. (correct)
What is the primary purpose of quantifying virulence using measures such as ID50 and LD50?
What is the primary purpose of quantifying virulence using measures such as ID50 and LD50?
- To determine the number of pathogens required to cause disease. (correct)
- To compare the virulence of different pathogens.
- To determine the effectiveness of a treatment against a pathogen.
- To determine the severity of symptoms caused by a pathogen.
Which of the following is an example of a pathogen that causes disease only under certain conditions?
Which of the following is an example of a pathogen that causes disease only under certain conditions?
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What is the primary difference between a latent infection and an asymptomatic infection?
What is the primary difference between a latent infection and an asymptomatic infection?
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What is the primary purpose of the stages of bacterial pathogenesis?
What is the primary purpose of the stages of bacterial pathogenesis?
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