Question

Tuberculosis (Tb) does not infect very many individuals. In fact, at the Tb hospital in San Antonio, Tx, many physicians talk with their patients in the courtyard on a daily bases without becoming ill. However, Tb is getting harder to cure and the death rate of Tb is increasing. Which of the following best describe Tb. Question 5 options: A) Low Infectivity; Low Virulence B) High Infectivity; Low Virulence C) High Infectivity; High Virulence D) Low infectivity; High Virulence

Answer 1

Infectivity can be defined as the capacity of a disease to be transmitted from one individual to another while virulence is the word which is used to describe the capacity of a microorganism to cause damage to its host.

In this case, Tuberculosis is not that easily transmitted, although it is causing mortality in the population already affected by it. Hence, the correct answer to this question is "Low infectivity high virulence" which is option D.

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