🦠microbiology review

Burst size

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Burst size is the number of viral particles released when a host cell bursts at the end of the lytic cycle. It represents the productivity of viral replication within a single infected cell.

5 Must Know Facts For Your Next Test

  1. Burst size varies significantly between different types of viruses.
  2. A higher burst size indicates more efficient viral replication.
  3. Burst size is determined experimentally through one-step growth curves.
  4. Lytic phages typically have larger burst sizes compared to lysogenic phages.
  5. Burst size can be influenced by factors such as host cell type and environmental conditions.

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