Vaccine prevention of acute respiratory infections (the common cold) is unlikely because
A) colds are easily misdiagnosed as something else.
B) humans do not generate a strong immune response to common cold viruses.
C) there is a relatively low social and economic cost associated with the common cold.
D) there are many distinct virus strains and serovars that cause the common cold.
E) antibiotics easily cure the common cold.
Correct Answer:
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Q9: A key factor in the high prevalence
Q10: The upper respiratory tract is lined with
Q11: Pneumonia is
A) shortness of breath.
B) inflammation of
Q12: SARS is caused by a(n)
A) coronavirus.
B) influenza
Q13: Influenza differs from the common cold in
Q15: A contributing factor to the spread of
Q16: The development of a pseudomembrane on the
Q17: An unusual feature of the 1918 Spanish
Q18: The demographic most at risk from respiratory
Q19: This disease is caused by strains of
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