In article <63ado1$d8f at net.bio.net>, Rajesh Krishnam
<krishnam at gulag.mit.edu> wrote:
>Is it because viral fusion and entry does not occur each time a virus
>binds to the cell even though the binding is specific?
This is indeed the case. Binding, unlike entry (penetration), is a
non-energy requiring, REVERSIBLE process.
See: http://www-micro.msb.le.ac.uk/224/Replication.html