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HOW to read VVM

 How to read a VVM



1.Inner square is lighter than outer circle. If

the expiry date has not been passed,

USE the vaccine.


2.At a later time, inner square is lighter

than outer circle, If the expiry date has

not been passed, use the vaccine.


3.Discard point:

Inner square matches colour of outer

circle. Do not use the vaccine. Inform

your supervisor.


3.Beyond the discard point:

Inner square darker than outer circle.

Do not use the vaccine.

Inform your supervisor.



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