Several animal viruses namely the Human immunodeficiency virus exit exits from the infected cells of the immune system through a process referred to as budding.
During release, the newly-created viruses are released from the host cell, either by causing the cell to break apart, waiting for the cell to die, or by budding off through the cell membrane.
The cells are exited individually by the virions.
In the process of budding, cells do not experience lysis and are not killed immediately.
But, damage to cells that viruses infect can cause it to be impossible for cells to normal function, although cells stay alive for quite some time.
All the productive viral infections have the same steps in the virus replication cycle – attachment, followed by penetration then uncoating and replication followed by assembly and finally release.