NB F2 S3- Pandemic factors

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NB F2 S3- Pandemic factors

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4 Posts

anne
Forum Elite

Topics: 41
Posts: 348

04/13/04 - 10:57 AM

50. Periodic world-wide pandemics 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

bobby
Forum Guru

Topics: 136
Posts: 569

04/13/04 - 11:02 AM

influenza A. it is the only influeza virus that can infects humans and capable of undergoing antigenic shift

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anne
Forum Elite

Topics: 41
Posts: 348

04/13/04 - 11:12 AM

thanx

Idiopathic
Forum Guru

Topics: 19
Posts: 641

04/13/04 - 11:47 AM

The answer is influenza A, because it is the only one responsible for pandemics, but humans often get infected with B and C. They cause milder flus.

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