Microbiology

Learn the toughest concepts covered in Microbiology with step-by-step video tutorials and practice problems by world-class tutors.

21. Principles of Disease

Characteristics of Infectious Disease

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concept

Intro to Characteristics of Infectious Disease

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Communicable vs. Noncommunicable Diseases

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Problem

Which of the following would be considered a sign of a disease or infection?

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Problem

Diseases or infections that can be transmitted from one individuals to another are categorized as what types of diseases?

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Problem

Which of the following illnesses is an example of a noncommunicable disease?

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Determine if the diseases below are communicable or noncommunicable diseases.

A. Communicable Disease. B.  Noncommunicable Disease.
_____ 1) Lung Cancer.            _____ 3) HIV.                         _____  5) Diabetes.
_____ 2) Measles.                   _____ 4) Stroke.                    _____ 6) Covid-19.

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Problem

Pathogens that are very virulent are more likely to cause disease than pathogens that are less virulent (Virulence:the ability of a pathogen to cause and infection/disease). The infectious dose for Virus X is must lower than the infectious dose of Virus Y. Which virus is more virulent?

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concept

Primary vs. Secondary Infections

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Problem

Opportunistic pathogens are least likely to infect which of the following groups of people?

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Virulence

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Problem

Characteristics of a pathogen that promote pathogenicity are called:

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Problem

Virulent pathogens are:

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Problem

Which of the following pathogen characteristics may be considered virulence factor(s)?

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Problem

An encapsulated bacterium can be a virulent pathogen because the capsule:

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Which of the following is a true statement?