What is the term for measures of disease severity?

Prepare for the Introduction to Epidemiology and Concepts of Infectious Disease Test with detailed study materials and multiple-choice questions. Arm yourself with knowledge and insights to excel in infectious disease diagnostics.

Multiple Choice

What is the term for measures of disease severity?

Explanation:
Virulence is the degree of harm a pathogen causes in an infected host. It directly relates to disease severity, reflected in outcomes like how often infection leads to hospitalization, complications, or death (case fatality rate). Infectivity describes how easily a pathogen establishes infection, not how severe the illness becomes. Pathogenicity is the ability to cause disease at all, once infection occurs, but it doesn’t capture how severe the disease is. Immunogenicity is about the immune response elicited, not the severity of illness. So, for measures of how severe a disease can be, virulence is the best-fitting term.

Virulence is the degree of harm a pathogen causes in an infected host. It directly relates to disease severity, reflected in outcomes like how often infection leads to hospitalization, complications, or death (case fatality rate). Infectivity describes how easily a pathogen establishes infection, not how severe the illness becomes. Pathogenicity is the ability to cause disease at all, once infection occurs, but it doesn’t capture how severe the disease is. Immunogenicity is about the immune response elicited, not the severity of illness. So, for measures of how severe a disease can be, virulence is the best-fitting term.

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