Term
Which of the following antiviral agents is a purine nucleoside analogue
that has shown promise with Lassa fever, influenza A and B, and respiratory syncytial virus (RSV)? |
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Definition
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Term
| Echoviruses are cytopathogenic human viruses that mainly infect the |
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Definition
They were named enteric cytopathogenic
human orphan (ECHO) viruses because, at the time, they had not been
linked to human disease and thus were considered “orphans.” Echoviruses
now are known to infect the intestinal tract of humans; they also can cause
aseptic meningitis, febrile illnesses, and the common cold. Echoviruses
range in size from 24 to 30 nm in diameter and contain a core of RNA. |
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Term
A tube of monkey kidney cells is inoculated with nasopharyngeal secretions.
During the next 7 days, no cytopathic effects (CPEs) are observed.
On the eighth day, the tissue culture is infected accidentally with a picornavirus;
nevertheless, the culture does not develop CPEs. The most likely
explanation of this phenomenon is that |
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Definition
Rubella virus does not produce
cytopathic effects (CPEs) in tissue-culture cells. Moreover, rubellainfected
cells challenged with a picornavirus are resistant to subsequent
infection and thus would not exhibit CPEs. Monkey kidney cells infected
only with picornavirus would show CPEs. |
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Term
| Virus associated with transient aplastic crises in persons with sickle cell disease? |
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Definition
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Term
A 3-year-old child presents at the physician’s office with symptoms of
coryza, conjunctivitis, low-grade fever, and Koplik’s spots. The causative agent of this disease belongs to which group of viruses? |
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Definition
Koplik’s spots are pathognomonic
for measles. The measles virus is a paramyxovirus |
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Term
| leading cause of the croup syndrome, will hemabsorb red blood cells? |
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Definition
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Term
| Vector for Eastern equine encephalitis |
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Definition
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Term
| Rhinovirus mode of transmission |
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Definition
| fomites, hands and fingers |
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