The graph below represents viral abundance during a single bacteriophage replication cycle.  Note that, unlike the multiple-part replication cycle of bacteria, viral replication occurs as a single step.


The period of time following viral adsorption and penetration and prior to release can be called the eclipse phase, since during synthesis no assembly no evidence of viral particles is present in the cell.  Burst size represents the maximum number of virions produced by the cell during release.