Host preference

[Kirk Leifso]

I was wondering if a virus has a host preference, or if they 
attack only one kind of cell.

For example: Hypothetically speaking, if a virus attacks 
two cells. Will a virus attack one cell if another is not 
available. Then if a second cell is made available would the 
virus attack one specifically over the other or do they have no 
preference at all.

I would appreciate if anyone would help me out with this 
question.

Kirk Leifso
leifsok at uvaix.uvic.ca