1- Fill in the blank: There are _ HA and NA subtypes that have been asso

ID: 301434 • Letter: 1

Question

1- Fill in the blank: There are _____ HA and ____NA subtypes that have been associated with large scale outbreaks (pandemics) of influenza?

2-True or False: Influenza mutates at the same rate in different host animals?

3- List 3 reasons why the 2009 H1N1 caused so much panic around the world?

4-True or false: The mulberry form of variola major is found in the vesicular fluid?

5-What types of cells does poliovirus infect in the early stages of the infection?

6-What types of cells does poliovirus infect in the early stages of the infection?

7-True or False: Mutations of the CCR5 gene can confer a resistance to infection with HIV?

Ans

1) There are 16 HA and 9 NA subtypes are responsible for outbreaks of influenza.

2) .False

Mutation rare vary from individual to individual in influenza.

2009 swine flu is so much panic acroos the world due to : -

High mortality

Easy transmission

Short incubation period

True

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