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Questions and Answers
What is the definition of infection?
What is the definition of infection?
- Invasion of living tissue by microorganisms or their products (correct)
- Invasion of living tissue by commensal microorganisms
- Invasion of living tissue by viruses and bacteria
- Invasion of living tissue by pathogenic microorganisms only
When do commensal microorganisms cause opportunistic infections?
When do commensal microorganisms cause opportunistic infections?
- When they are present abnormally within the human body (correct)
- When they are present normally within the human body
- When they enter the body through contaminated food
- When they cause diseases in a healthy host
What does the term 'infectivity' indicate?
What does the term 'infectivity' indicate?
- The ease with which an infectious disease spreads through direct contact
- The likelihood of an organism causing severe or aggressive disease
- The ability of an organism to gain entry into and proliferate in the host (correct)
- The ability of an organism to cause disease in a normal, healthy host
What is virulence defined as?
What is virulence defined as?
What are primary pathogens?
What are primary pathogens?