Cedrick
Forum Fanatic
Topics: 320
Posts: 1,928
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Periodic world wide pandemic of respiratory infections occur because of shifts in the antigenic properties of which of the following viruses ?
a.-coronavirus
b.-influenza A
c.-influenza B
d.-influenza C
e.-parainfluenza virus
f.-respiratory syncytial virus
g.-rhinovirus
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| Cedrick
Forum Fanatic
Topics: 320
Posts: 1,928
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Influenza A
choice B
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| vallia
Forum Guru
Topics: 98
Posts: 889
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agree
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