超星 - 呼吸道病毒--章节练习

单选题

Subacute scleroing panencephalitis (SSPE) is best described by which of the following statements?

A. It is thought to be related to the defective virus of measles virus
B. It is a late CNS manifestation of mumps
C. It is a common event occurring in 1 of 300,000 cases of mumps
D. Viral DNA can be demonstrated in brain cells
E. Demyelination is characteristic

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单选题

Which of the following is a leading cause of pneumonia primarily in infants?

A. Rabies
B. Rhinovirus
Cytomegalovirus
D. Respiratory syncytial virus
E. Mumps

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单选题

Which of the following statements reflects the pathogenesis of influenza？

A. The virus enters the host in airborne droplets
B. Viremia is common
C. The virus frequently establishes persistent infections in the lung
D. Pneumonia is not associated with secondary bacterial infections
E. Viral infection does not kill cells in the respiratory tract

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单选题

Which of the following statements concerning antigenic drift in influenza viruses is correct?

A. It results in major antigenic changes
B. It results in new subtypes over time
C. It is exhibited only by influenza A viruses
D. It is caused by frameshift mutations in viral genes
E. It affects predominantly the matrix protein

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单选题

Which of the following statements about isolation of influenza viruses is correct?

A. Primary influenza virus isolates grow readily in cell culture
B. Diagnosis of an influenza virus infection can only be made by isolating the virus
C. Isolation of virus can help determine the epidemiology of the disease
D. Isolation of influenza virus is done using newborn mice.

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单选题

A 2-month-old infant developed a respiratory illness that the pediatrician diagnosed as bronchiolitis（细支气管炎）. The most likely cause of the disease is

A. Parainfluenza virus type 4
B. Respiratory syncytial virus
C. Influenza virus
D. Metapneumovirus
E. Measles virus

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单选题

A 20-month-old boy had an illness characterized by fever, irritability, conjunctivitis, and a brick-red rash initially on the face but spreading downward and outward. At age 9 years, the boy had a gradual onset of severe, generalized neurologic deterioration. Subacute sclerosing panencephalitis (SSPE) was diagnosed. Which of the following statements about SSPE is correct?

A. Rapidly progressive deterioration of brain function occurs
B. The disease is a rare, late complication of rubella infection
C. The incidence of the disease is rising since the introduction of MMR vaccine
D. High titers of measles antibody are found in cerebrospinal fluid
E. Defective varicella-zoster virus is present in brain cells.

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单选题

Each of the following statements concerning measles vaccine is correct except

A. The vaccine should not be given before 15 months of age because maternal antibodies can prevent an immune response
B. Virus in the vaccine contains only one serotype
C. The vaccine should not be given at the same time as the mumps vaccine because the immune system cannot respond to two viral antigens given simultaneously
D. The vaccine contains live, attenuated virus.

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单选题

Each of the following statements concerning rubella is correct except

A. Congenital abnormalities occur primarily when a pregnant woman is infected during the first trimester
B. Women who say that they have never had rubella can, nevertheless, have neutralizing antibody in their serum
C. In a 6-year-old child, rubella is a mild, self-limited disease with few complications
D. Acyclovir is effective in the treatment of congenital rubella syndrome

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单选题

Which one of the following statements concerning mumps is correct?

A. Because there is no vaccine against mumps, passive immunization is the only means of preventing the disease
B. Although the salivary glands are the most obvious sites of infection, the testes, ovaries, and pancreas can be involved as well
C. The diagnosis of mumps is made on clinical grounds because the virus cannot be grown in cell culture and serologic tests are inaccurate
D. Second episodes of mumps can occur because there are two serotypes of the virus, and protection is type specific

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