What does immunization coverage mean?

It's the percentage of a group of people — say, a particular neighbourhood or city, or an age group — who receive one or more vaccines of interest.

For example, immunization coverage for influenza among people aged 65 years and over is calculated as:

People aged 65 years and over receiving influenza vaccine in the previous season

Total population
aged 65 years and over

x 100

 

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immunization coverage