Drift

1. Drift is a process in which influenza virus undergoes mutation.

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Notes: The amount of change can be subtle or dramatic, but eventually as drift occurs, a new variant strain will become dominant. This process allows influenza viruses to change and re-infect people repeatedly through their lifetime and is the reason influenza virus strains in vaccine must be updated each year.

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(Source: Business Continuity Management Institute - BCM Institute)

A Manager’s Guide to Implementing Your Infectious Disease Business Continuity Plan

A Manager’s Guide to ISO 22301 Standard for Business Continuity Management System