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Question
Hantaviruses are related to viruses such as ________ and ________.A) human immunodeficiency virus (HIV) / Hepatitis C
B) Hepatitis A / Hepatitis B
C) human immunodeficiency virus (HIV) / Influenza A
D) West Nile virus / Ebola virus
Answer
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A) gonorrhea.
B) influenza.
C) hepatitis.
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Which of the following statements about chlamydial infections is TRUE?
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The Spanish flu of 1918 was caused by an ________ influenza virus.
A) H2N1
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D) H2N2
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A) vectors can be controlled through other means.
B) most diseases lack reservoirs.
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In just over a decade of efforts, the World Health Organization (WHO) eradicated smallpox by using worldwide
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In 2003, the majority of AIDS deaths occurred in
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B) North America.
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The study of the occurrence, distribution, and determinants of health and disease in a population is the field of
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Filoviruses (such as Ebola virus) that cause severe hemorrhagic fevers generally have high ________ but low ________.
A) incidence / prevalence
B) prevalence / mortality
C) mortality / morbidity
D) morbidity / mortality
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Cholera is an example of a pandemic disease that
A) has multiple wild animal reservoirs and is thus difficult to eradicate.
B) spreads from a common source and could be controlled with adequate clean water and waste sanitation measures.
C) is spread through direct contact and has only a human reservoir.
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Influenza pandemics occur cyclically because
A) less than 100% of the population is immunized.
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C) the vector is seasonal.
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B) can be virtually any pathogenic bacterium or virus.
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A) TC
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A) Self-activation
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A) clonal expansion.
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A) clonal anergy
B) clonal deletion
C) clonal anergy and deletion
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A) antibody production.
B) high energy.
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Q:
An individual usually expresses ________ structurally distinct allele(s) that encode class I MHC proteins.
A) one
B) two
C) four
D) six